We have had many different kinds of mattresses throughout or marriage but it wasn't untill we bought our sleep number mattress, that we slept great! Some friends of ours have on and kept telling us about it. We were very skeptical at first. It seemed like every mattress we purchased was a let down. We had a pillow top, a memory foam, every kind you can think of. We just felt tired and achey when we woke up. My husband kept going into the stores and trying out the sleep number beds. I refused to go in. The price seemed so high and what if it didn't work. We had been promised all the other mattresses...