We have a dual chamber air bed in our S&B with a 4 inch memory foam topper. Best sleep we ever had. After a week in our 5er and aching backs, we bought the same set up for our RV. We call them Big Bed Of Comfy I & II.
One of them is Sleep Comfort the other is another brand I can't remember at the moment. We purchased a factory return for the RV, when one of the chambers leaked out of the box, they replaced it within a couple of days, no questions asked. Just wanted us to return the failed chamber.
Purchase residential quality, camping quality won't last. We adjust the pressure for height changes as we travel, it is not a big deal.