My wife rarely changes her sleep number settings from 35, but like to change my settings often. Sometimes, 80 feels just right, sometimes 95, sometimes 45. It's great to be able to "dial up" the firmness that feels best at the moment!

8 or 9 years ago my wife and I bought 5000 series sleep number bed (cal. king size.) I removed the top (pillow) layer of foam and replaced it with 3" of high density memory foam. The bed is wonderfully comfortable and is holding up superbly. With the sleep number adjustability AND the memory foam, w...