
Brooklyn Bedding
Signature Hybrid
Durable, comfortable, adjustable firmness; excellent value.

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Sinus brand through Walmart is pretty good, it’s what my husband and I use and we really like it. It was nowhere near $1500. We have the 8 inch memory foam queen size and we paid less than $300 for it and have used it for over 5 years. We got a full size for a guest bed we had awhile back and everyone loves it so it was a good move.
I got a cheap 8" zinus memory foam mattress ($200 )about 6 years ago for the guest room. People still love it. I also got a more expensive ($1200) sleepez latex hybrid mattress that is pretty awesome as well. It's quality materials. I recommend the latex hybrid or a get a cheap zinus or novella or lucid from Amazon. The more you spend or dwell on the decision, you'll find more faults with it.
We just got the Zinus 8", as recommended by many people in an RV group were in. And I bought a mattress pad. The factory one made it 3 nights and now it's in the trash. We don't keep the Murphy in sofa mode all that much and the bed is always down for storage and travel. I don't have any recs for one with a fold.
I have a 7 year old Zinus 12 inch and it's still great. I just got 8 inch, I think, for my kids beds. Theirs are super comfy as well but it's only been a couple of months so I'm unsure about longevity.
Zinnus green tea cooling gel mattress from Amazon. Had a high end tempur-pedic cloud luxe for a lot of years. Loved it. Tried my son’s Zinnus when it was time to replace and bought one for a mere fraction of the price. I’m a side sleeper and have no issues. I replaced it once after 4-ish years but when I weigh the cost against the tempur-pedic I’m still legions ahead. Costco sheets. No blanket. It’s not hot. Have one in my RV now, too. FWIW.
FWIW, I recently stayed in an Airbnb and slept on a Zinus mattress from 2018. Best night of sleep I’ve ever had, woke up with Zero aches or pains. Primarily a Side Sleeper with occasional stomach. I currently have an Amerisleep AS5 and while it’s held up great it’s too plush to provide the necessary back support I need. Prior to that I ordered a Casper which was unbearable and returned after 3 days. I went down a rabbit hole, multiple reviews and the reality is that everyone is different and therefore will have different results between mattresses. It’s honestly overwhelming, not in a good way, in the amount of companies and products out there. I decided it’s best to order something I had a great experience with. As someone wrote on this sub it’s worthwhile to consider a cheaper mattress, replacing it often than an expensive one which might be a gamble. I’ve also considered Costco for the return policy but saw that there are multiple negative reviews for all their products. I would say the best way is to try the mattress out as even if for a short while at a store, before blindly ordering one online.

Brooklyn Bedding
Signature Hybrid
Durable, comfortable, adjustable firmness; excellent value.

Sleep EZ
Organic Latex Mattress
Highly customizable layers, durable; but extremely heavy.

Helix
Midnight Luxe
Pain relief, side sleeper support; but some find too soft.

Purple
The Purple Mattress
Unique grid feel, cool; but heavy, expensive, polarizing.

Brooklyn Bedding
Aurora Luxe Cooling
Excellent cooling, zoned support for heavier sleepers.

Ranked #1
Novaform - Platinum 16.5" Luxury Hybrid Mattress

Ranked #1
Brooklyn Bedding - Titan Plus Luxe

Ranked #1
Purple - The Purple Mattress

Ranked #1
Sleep EZ - Organic Latex Mattress

Ranked #1
Helix - Midnight Luxe

Ranked #1
Sleep EZ - Organic Latex Mattress