I want your opinion and advise, especially if you've owned a Select Comfort Sleep Number Bed, for any amount of time. These beds seem terribly expensive, and all I know is what I've seen on the internet and heard on the radio. But I want to hear from owners who've had experience. Is it worth it? Are you satisfied I'm considering a "demo bed" at a significant savings. Phone number (800) 215-4593 and the sale ends Feb 21, 08, but all sales are final.