About 5 years ago my wife and I bought a sleep number mattress. We both slept like a baby; we woke up about every 2 hours and cried because we were so uncomfortable. I wish I'd looked on the internet first. It seems that most everyone agrees that their queen size mattress is completely worthless. It's just a couple of cheap air mattresses with a wedge of foam in the middle, where you both end up on top of each other every couple of hours. There was one of those junk things in our RV when we were buying it. We made them remove the thing and change it out or no deal.
Other than the terrible odor for almost 6 months, the "real" Tempurpedic mattress is the best we've had. I was about ready to send it back when it finally stopped "off gassing". There are hundreds of copycats who are "like Tempurpedic", but like most all knock-offs, they fall short. We've had the Tempurpedic for almost 5 years now and it still feels like new (except for no smell). If you want a sleep number bed, you can generally find them on Craigslist or in yard sales really cheap. The 'camping' air mattress rage is pretty well dead now.