ComfortAir will save you money compared to the Sleep Number Bed. I am not knocking the Sleep Number Bed, because we have one at the S&B. Just installed the ComfortAir King in the fifth wheel and it is every bit as comfortable as the Sleep Number. Ever since I broke some back ribs the only bed that I am comfortable on is an adjustable bed. The OEM was horrible and finally after three years it has been replaced. My wife likes it soft and I need it very firm. I find that foam will eventually loose its ability to spring back and coil mattresses comes in one firmness. So they are not for us.
By the way, the OEM is ok for a few trips so you do not have to jump to replace ASAP.
With Heartland you get great product, customer support, and a great user forum for support as well.