We have a sleep number, purchased maybe 8-9 years ago and still love it. We have had to replace the air pump about a year or 2 ago..replaced with a generic one, not a sleep number brand since they are real proud of them..happy with it also. If you buy one, you will think there really is not much too them for what they cost, but is worth it. They have several different upgrades, we sprung for the pillow top whihc I thought made it feel more like a normal mattress when the air pressure was lower. I sleep well most nights.