Bests & Worsts Reviews from Amazon

This is an update: Well I posted a wonderful review on this mattress and slept on it for months and have enjoyed it. Last month I noticed my back hurting when I get up in the morning. I thought maybe something I was doing during the day and left the idea alone. Well last week I started looking at my mattress and noticed when I got up there was large impression and it wasn't going back up. A couple of hours later I checked on the mattress and it still had a deep impression and very soft.Not what I want after 5 months.I looked at my warranty paper-no phone number, address-Nothing. BUYER BEWARE