We've got one for us and one for the spare room, also bought one for our son at his new house, they are the best beds ever! You may feel that its too firm at first but you do sink into them. The ones we have are about 12" deep, the bottom 9" is a firm foam and the top 3" is the memory foam. If you get one it'll be vac packed into a tube shape and only open it in the room you're going to use it as they are really heavy and harder to move when expanded. Oh and before we got it, I did suffer backache from time to time....not now!