Some of you may have seen my first thread that explains my story:

So after months and months of researching, going from mattress store to mattress store, I finally made a promise to myself that for my new year's resolution I'd finally pick a new mattress.
I had been sleeping on a old, innerspring, sealy posturpedic hand me down from parents. That mattress is probably twenty yrs old

Never had any serious back issues though but that's probably because I'm still young (27) and workout (lift weights) religiously (5 days a week) and eat healthy foods.

So In my search of mattresses I narrowed down my options to Simmons beautyrest, Sealy posturpedic, and Serta perfect sleeper. My old boss whose a Chiropractor has a Simmons so he recommended that brand for me. I ended up going with the Simmons because of his recommendation and the price was great for a king, pillowtop ($800).

I've had the bed since Jan 3rd and I like the new mattress, but don't love it. I've had numerous nights where I toss and turn all night and can't fall asleep. I've also woken up with low, achey back pain that I've never experienced before. I am a stomach sleeper so I know that's bad for your back but I didn't use to feel this with my old, worn out, hand me down mattress.

I have a little over a week left of my 60 day exchange policy and I'm considering exchanging the mattress for a different one. I just get scared I'll choose another mattress and will not even like it as much as the Simmons and I'll be screwed lol! The other mattress I'm considering (went back into Sleep America where I bought the mattress and layed on more beds) is a Serta. This is supposedly there "higher end" model that has a 20 yr warranty and more supportive foam in the hip areas and what not. I think the label says Serta perfect day "morning sunrise" or something like that.

The sad thing is the serta is around $1600 so I'd have to pay  a lot more to switch to that mattress. It would be worth it though if I can sleep a lot better.

Just needing some opinions please to help with my decision. I'm stuck here :(

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Ok, so by March 3rd, I have to choose my new mattress to exchange my Simmons with. The recommendation you guys gave me was to buy a firm mattress and put a latex topper on it.

For a king sized mattress around 1,000, I really only have a few choices. A Sealy non pillowtop, a serta perfect sleeper, and a Europa firm bed. I had never heard of Europa but the sales lady says they just don't advertise like the big "S" brands. She said there good beds though (individual pocketed coils, 10 yr warranties).

Which of these would be the smart pick? I'm deciding tomorrow so please help!

Thanks...