Follow-Up: I have suffered from FMS since 1993???who knows, I originally started off with a waterbed, went to multiple chiropractic mattresses, back to waterbed then tried free for three months the select comfort...at the end of the three months I would have paid twice the money for it. I got the pillow top with the digital read out so that once I found the comfortable thickness...all I had to do is reset it if my kido's got on my bed and played with the setting...Try it...it is great!