We've had it only two weeks, but my wife and I LOVE this mattress. It's firm, but very comfortable as you settle into it. You do not sink way down in this mattress as some of my friends have asked me. My lower back pain is gone in two weeks of sleeping on this mattress. For whatever reason, I have had a bout with back pain for several months and would wake with pain in my lower back. This mattress has eliminated that pain. You can lie on your side with this mattress w/o pressure on your hips. I have friends w/ the expensive memory foams and this one is equal if not better. I have not noticed any problem with it being "hot" to sleep on either. My wife likes a very squooshy matttress, but has commented that she likes this mattress more w/ each passing day. We both have noticed the way the mattress keeps us from shaking each other in the night when we move around.