Getting back to the original topic of this here thread, I have a Sleep Number bed.. the one with the dual air chambers so that each person can control their side of the bed.
I'd recommend them in a heartbeat. Its a really awesome bed, probably the most comfortable mattress I've ever slept on. A bit pricey, but worth every penny.
That, and the customer service is pretty good. Every now and then, I've heard of people's beds breaking or something, but the company is extremely helpful. That, and they come with a lifetime guarantee.
And MB, if you're waking up feeling like a Manatee was jumping on your back, you've got more issues than just needing a new mattress...