I fell for it.  Sleeping on air.  While it's likely true that you don't suffer all of the "pressure points" of a traditional spring mattress, I don't find that I sleep any better!  In fact, my partner sleeps worse in the Sleep Number! 

I wake up with fatigued muscles.  I toss and turn half the night away. 

I adjust the bed several times as directed.  Still, I don't find the right number that works for me every time.  There are even times when I adjust my side of the bed and the compressor seems like it gets stuck in a increase/decrease cycle.  Pumps more air in, lets more air out, pumps...