This interest me also. I thought I had bought a good mattress but I absolutely hate it after a couple years. No matter how long I sleep I wake up feeling like dog crap! My shoulders, back, legs, killing me when i wake up and my whole body is stiff as a board. Takes at least 30 minutes to function properly.
My wifes been on me for a while to get a new bedroom suit, and im bout to the point I don't care how much it cost, I want to get a good nights sleep!
yea i tend to get better sleep in my recliner now days