Sleep number bed

Anyone have or have had a sleep number bed? Or know someone that does? Any good? Right now we have a Tempur-Pedic set that we've had for 3 years or so and it is killing us. My husband and I both are having back, hip and shoulder pain on it. It isn't firm enough. It was firmer when we first bought it. My daughter was recently sick and I slept on an air mattress in her room to be closer to her and I slept really good on it. So I thought maybe a sleep number would be good. What kind of mattress set do yall have? What's good?