As a palliative help, I've had a mid range Sleep Number bed for 10 years and love it. I would not go back to a conventional bed. The idea is that you can adjust the air pressure to fit your body. If you lose weight you'll want it firmer. If your muscles hurt or you are injured go softer. This is a huge help. However, I do think that Comfortaire makes better quality air beds and recommend them over Sleep Number. They are a better value and are made better. My sleepnumber bed did have issues with a defective zipper and controller that were handled under warranty, however for a product this expensive they should have gone with a better zipper.