Have only had it for a week but so far LOVE it!  My back had been hurting before, I think due to a sagging mattress.  Every morning I would wake up and hardly be able to move.  Once we got this mattress, no more back pain in the morning.  Just the other morning I turned on my side and started to feel that old back pain feeling, but it literally seemed to disperse and then go away!

I thought I had wanted a very firm mattress.  I think this is listed as medium firm. but I really do love the pillowtop or eurotop feeling to it, like it hugs and supports the contours of the body.  I am just hoping that the mattress lasts, as our sagging mattress that gave me a backache was only 4 yrs old.  So far though, dreamy!