Slumber Search is supported by readers. Some links on Slumber Search are referral links. If you use one of these and buy something, Slumber Search may make a small amount of money. More info.
Diamond mattress is a family run mattress company that has been in operation since 1946. Their big differentiator is that they actually make their own pocket coils and process their own memory foam. This is a bit different than many mid-tier mattress companies that outsource their manufacturing. Their specialty is pocket coil and innerspring mattresses, though they also build memory foam mattresses as well. Most customers like their Diamond mattresses, but there were some that had issues with durability and initial feel.
Eastman House mattresses have been making mattresses since 1866 and also own the Eclipse mattress brand, and now are a global mattress brand. They have mattress production facilities throughout the US and also globally in China, Australia, India, Pakistan, Brazil, South Korea, and Turkey. They offer a variety of mattresses from pillow top innerspring, to hybrid, and also a latex only mattress.
Based on our aggregated reviews and our scoring method, we recommend Diamond in this match up!
See Our Full Review of Diamond
Eastman House: 7.1/10
Eastman House: 7.1/10
Eastman House: 6.8/10
No Back Pain:
Eastman House: 6.8/10
Eastman House: $549-$1029
Get Yours Now
Get Yours Now
With customer data, it is easier to understand if a mattress will work for you. That said, it is at times easy to get distracted by all of the other messages from other brands. These mattresses have both positive and negative feedback from customers. Some report feeling comfy in their new bed, but others report not feeling as good.
Mattress support can be the life changing difference you need to have a refreshing night sleep. Initially, these mattresses are reviewed as being quite supportive, but some folks had complaints about the supportiveness over a long duration. Take a look at the specifications and the reviews to make sure that these fit your body.
Edge support is an important attribute in hunting down a mattress that is comfortable no matter where you relax on it. These mattresses are generally well regarded on edge support, but there may be some uncomfortable contouring for some.
Bowling Ball & Density Tests
In bowling ball tests that measure the supportiveness of a new mattress, there is initial support throughout the mattress is fairly even for most sleepers. Some folks have mentioned that support may degrade over time for some.
These mattresses get mixed feelings from sleepers on their durability. We all want a mattress that stays just as cozy in 10 years as it feels now, but sadly, not all will support you for the long term. If a mattress with mixed feelings on durability is on your short list, make sure to do one last look at the warranty and return policies so you are protected.
Finding out how customers really feel is sometimes a difficult task -- especially with brands trying at all costs to protect their reputation. These mattresses, unfortunately, don't get the best reception from customers versus competitors. There are still customers that are happy with their mattresses, but others that are not as pleased. Read on below to get the details on the specifics.
In terms of having support long term, these mattresses get mixed reviews. Some customers feel comfortable and well supported, but others didn't feel comfortable while they slept. If you would describe yourself as plus-sized, you should do added research to make sure you find a match for you.
Edge support is the amount of supportive resistance you get on the edge of the mattress and is important for anyone that likes to sit on the side of their bed. Some may find that the edge support in these mattresses is not as robust as others.
Sadly, these mattresses don't always get love from customers on durability. While some sleepers reported feeling comfortable, others talk about problems with comfort over a short duration. Make sure to take a look at the specifications, warranty, and reviews before buying.
Not as good quality as I was expecting, but you get what you pay for.View More Reviews
I can't complain about this bed -- I am really happy with it and it feels comfortable to me. The only annoyance was that the shipping was late getting to me.
I've had a diamond for a couple years and it is definitely an okay bed. My hubby likes it more than I do. I want something more luxurious.
My last three beds are diamond beds. Their longevity isn't as good anymore, but I still love their products and stand by them as a good bed!
My bed started falling apart after only 3 months. It feels as if you are sleeping in a valley 10'' deep. We are not heavy people. After 9 months on the bed, we couldn't take it anymore.
We had two prior Diamond mattresses that we loved so we thought that we should get a third. We finally found a place with one and that is when the problems started. After only a month, it started to sag. It was like sleeping in a gutter. I called and they sent an inspector who said it was a 7/8 sag, which is within the normal range. The problem was when you get on it, it sags way worse. Sure, I am 200lbs and 6 foot, but my wife is the only 100lbs and the same thing was happening to her!
Purchased the Ethos latex mattress 6 months ago. At first it seemed comfortable, but after 2 months we couldn't sleep on it. We rotated it but nothing helped. Every morning I woke up in terrible back pain. Then I found out that the latex wasn't even latex. 80% polyurethane foam, 6% rayon & 14% latex! This seems like blatant fraud to me as this was very expensive and we thought we were buying pure latex. Very dissappointing.
I love soft beds and this one cradles me into a cocoon every night. I absolutey love the way it feels and think it is perfect if someone loves soft mattresses.
Maybe it is too soft for me because I feel like it is taking my body some getting used to. But the materials seem to be high quality so I am hoping that my body adjusts.
Just doesn't feel right for me. Luckily I was able to send it back right away and the customer service was good.
I am finally sleeping through the night again. I had an awful spring mattress and so happy that I opted to get a new latex bed.
I have purchased four mattresses from them over the years and am getting ready to purchase a new one. Not that the others need replacing, they are still in great shape, they were left behind in a move unfortunately. Dollar for dollar you won't find a better mattress anywhere. They are incredibly fast as well.
HORRIBLE place. I called and spoke with a salesman 2 days before I went in because their store is about an hour away from where I live. I told them exactly what I needed (I needed a custom mattress for my RV). They gave me prices of 2 different mattresses and explained to me the difference. I thought the prices were fair so I showed up and Nick was completely unprofessional. When I told him which bed I was most interested in he quoted me a price almost $250 higher than what I was told just 2 days before. He told me that whoever told me that does not know what they are talking about and he was sorry. I told him sorry does not pay for my gas to get down here. Sorry does give me back the time that I lost. Again he said he was sorry and there was nothing he could do. I even had proof of the prices I was given. When I told him I was going to take my business elsewhere he said "you think you can find a custom mattress for cheaper". I told him I know I can. Later that same day I bought a custom RV mattress 60x72 for $400 including taxes. Plus the mattress I purchased elsewhere was softer, had thicker memory foam, included a cool gel memory foam and had a better warranty. Stay away from these guys. They have no clue what customer service is. The first guy I spoke with on the phone was great but when you get there it is a completely different story. They will jack up the prices at least 35%. Trust me there are better options out there for a custom mattress or a regular sized mattress. You would think getting it directly from the factory would be cheaper but that is definitely NOT the case here.
Don't waste your money on this product they won't stand behind it when it counts. I bought this mattress because the sales person told me they would back this product if there were any problems. Well five years into a twenty five year warranty the side seams have pulled apart and the memory foam has failed badly. they sent out a contracted inspector who;s only job is to deny claims not provide the customer with quality service. Save your hard earned money and buy anything else !
They aren't so helpful with a warranty unless you live there. Don't buy these mattresses outside of Utah because they will tell you to send the mattress to them at your cost THEN they will determine if it qualifies under the warranty and they will "fix it". Then you pay to ship it back to your home, even if it falls under their scope of warranty. Bad customer service!
I've bought over 20 mattresses through the years and my uncle bought hundreds. Ernie is the greatest. Can't believe how he can hoist a mattress on his back and carry it. Hope you are well!
I went here as a kid, the owner is a great guy. The location is the best
I have owned the Ethos – Tranquility Luxury Medium Mattress (Approx. value $2800). Have been very satisfied with the mattress for around 3-4 years. Even though I have owned this mattress since October of 2014. The mattress was delivered to my Southern California residence in Santa Clarita. During the 1st year of purchase. I have only slept on this mattress once or twice for every 60 to 90 day period, It was not until September of 2015, when I have fully moved back from my Northern California address did I sleep on this mattress on a daily basis. So I have really had a good 3-4 year comfort experience before the mattress started to show the deformity. This deformity has resulted in not being able to sleep on my side of the bed due to the sagging of 1.5 to 2.5 inches over approximately 25% of the mattress. This uneven sagging is observable without the need for anyone to sit or even lean on the mattress. About 4 weeks ago I have contacted the reseller from whom I have purchased this mattress and was given the manufacturer contact information. I contacted Diamond Mattress and was required to submit photos and fax over a warranty claim form. Diamond required to send over an inspector to document and process the warranty claim. Diamond Inspector showed up on April 10, 2019 and took more photos and was able to determine that the deformity maybe corrected by replacing the broken bed foundation. The bed foundation was purchased along with the mattress as supplied from the reseller which happens to be original Diamond Mattress foundation. Additionally, when inspecting the mattress the Diamond inspector was able to expose 8-10 inch tear in the mattress stitching (not related to the foundation issue) which was only observable upon turning the mattress bottom up. The inspector said that Diamond Mattress will contact us within a week. On April 18, we heard back from Diamond and were told that even though the warranty would cover the mattress for 10 years, the mattress foundation would not be covered? Asked about the tear in the mattress and he said something along the lines 'we should have reported this issue upon purchase'? I am speechless as to the lack of common sense of that statement with which the Diamond representative insulted our intelligence. How can the Diamond representative assert that the tear in the mattress was already there upon the time the mattress was purchased and delivered? And assuming that was correct, where is the quality control in releasing and shipping a defective mattress and foundation to a consumer? And how many consumers are likely to flip the mattress on its back looking for such a defect? The mattress warranty states that it may be void if the wrong type of foundation is used. However, even when Diamond has supplied their own foundation, Diamond Mattress would not honor their warranty. My experience has demonstrated that Diamond Mattress Warranty is a lie. Diamond should have stood by their product and I should have been provided with a non-defective foundation for this very expensive mattress set. Bottom line close to $2800 investment in this mattress set which is really only worth to me less than $1000. Effectively, when I have purchased the Diamond Mattress product, I have lost close to $2000. My recommendation to anyone who does not want to go through a similar experience D o N o t B u y a D i a m o n d M a t t r e s s
I purchased a Diamond mattress (Spinal Comfort) and paid more than I would have because of the 'Forever Warranty' feature sold me. I recently filed a claim because the upper portion (pillow top) is sagging. Diamond Mattress sent Integrated Bedding Group and reported 3/4" depressions on both sides, left and right, and the top left has shifted outward 2" in a 64" long area. The report also includes a faint yellow 30" stain. This was a pee stain from my baby. John, Diamond Mattress Warranty, said the stain voids my warranty. I explained it is a faint stain on the right side and the pillow top of the mattress is sagging on the left with a length of 64". This does not make sense. There is definitely a defect in materials and/or workmanship. FOREVER WARRANTY IS NOT TRUE. DO NOT FALL FOR THIS FEATURE.
I bought a Diamond Sleep Princess Pillow Top Mattress last Fall and was really looking forward to finally getting a good night's sleep. I got it home and set up and while it was ok at first, within the first three months it started sagging in the middle and has only gotten worse. Maybe I should've chosen a slightly firmer mattress, but all I know is for the money I paid, I'm very disappointed in the quality of this mattress and will never buy this brand again.
Purchased one of these mattresses a few months ago and there are body impressions in it already that never spring back. Neither of us are heavy either -- I am only 135 lbs and my partner only ways 129 lbs. It is absolutely ridiculous.View More Reviews
I don't know what they did to the floor model to make it feel good, but the one that came delivery is terrible. Within three days, there is sagging on my side and I feel like I am going to roll off the bed at night. This is absolutely the worst thing for my vertigo that I could ever imagine.
Giving two stars because luckily I don't have the bed anymore. It was a terrible bed. Started to sag within a week. Not sure what they put in this thing, but it isn't enough of something. Just really strange after liking it so much. Now, I am going to just order something online. I can't deal with any more shady mattress salespeople after this whole ordeal.
Been sleeping on one an Eastman House bed since the 90s. I don't complain.
Really not durable at all. Sagging within days -- my husband has decided to sleep on the couch at night since neither one of us can sleep as we are tossing and turning night in and night out. I can't believe the sales people get away with selling this garbage.
If you like a soft bed, this may be the bed for you, but I thought the floor model was firmer than this one that I have. It is just not firm at all and hurts my back at night. Not for me.
I've bought 2 Eastman House mattresses over the years and I absolutely love them. The thing that I love the most is that I can sleep on a plush bed that stays the same firmness over the years.
I got one of the Eastman House pillow top models and for the first 3 months, it has been divine. But I am noticing some sagging start to occur where I sleep. I am going to rotate the bed and I hope that helps. It does concern me that the good times are over.
It has been 6 months and already my pillow top has visible indents in it from where I sleep. I am a little overweight -- 200lbs 6'0'' but that should be ok, right?
I wanted a pillow top for the extra comfort, but I didn't expect that I would be sinking into the mattress at night. It is a little too soft to my liking.
This is an superb mattress. My husband and I sleep soundly through the night and we love the feel of the mattress. No complaints from us.
finally a great night sleep! and a affordable price. after spending $8500.00 on a supposedly best set, we were miserable, too heavy to move, uncomfortable bed. I was doubtful, we only had rotten bed 18 months, I was sleeping on the sofa. looking to buy new sofa, I saw sale and we figured what do we have to loose? quarter of the price and have slept like a baby every nite since ! thank you!
We bought an Eastman House mattress in January of 2017. I need a firm mattress, and believe paying for quality is important in something you’ll spend 6+ hours a night in. It always $1500 but It’s supposed to have a 10 year warranty and we even bought the recommended over-priced cover for an additional $150 to help keep the mattress “under warranty”. In late October 2018 I started having back issues, that required frequent visits to a chiropractor and most recently to a med...ical doctor to get some relief. We’ve taken pictures, filled out forms and waited 3 weeks to hear back from the “Mattress Rep” because the Furniture Store we bought it from has to receive credit back from Eastman to help us. We were told nothing is wrong with the mattress, it’s “just settling”, and to rotate it. We’ve rotated this mattress monthly since we’ve owned it. The side support has completely failed, but they focus on “dips” in the mattress. So it looks like unless the local furniture store wants to keep a repeat customer happy, I’m out the $1600+ and will have to pay for a new mattress. DON’T buy from this company...their warranty coverage is a joke.
We bought a queen & king bed last year. We spent more on them than we’ve ever spent on beds thinking we were buying high quality. My husband has back issues and his back hurts worse and the impression where he sleeps never goes back to normal. I don’t have back issues but I have a difficult time getting comfortable. We’re very disappointed with our beds as they aren’t comfortable and don’t hold their shape.