This is my second one and the only reason I had to get another one is I went from a queen bed to a king. So so comfortable I fall asleep faster and have no more lower back pain I just would have wondered if I'd like 4" more. One issue is finding sheets to fit cause my mattress is a pillow top and with this 3" memory pad on makes it thick so definitely keep that in mind cause you'll more than likely have to buy deep sheets. Also my patents have had there memory foam for 10 years now so I'm planning on having it for a long time.