The mattresses that come with RVs are horrible. They are thin, soft, spring mattresses. The first thing we did was pull ours out and put it in storage (I need to put it back in if we ever sell it). We initially replaced it with an AeroBed, but we had to be plugged in, or use my crappy inverter, to inflate it, which is less than optimal. While we were living in it, we put our real memory foam mattress in it, but it’s in the house now. We tried sleeping on a memory foam mattress topper Molly’s parents weren’t using, but it wasn’t thick enough to keep us from bottoming out, and it was only a twin. I was planning on finding some higher density foam to put underneath a memory foam mattress topper, and had talked with Menzo about it, since he was working on the same thing for his van, but never got around to it. While we were at Camping World, we looked at RV mattresses with memory foam toppers, but they were expensive, and you couldn’t try them out. They had a Sleep Number display you could try, but it was even more expensive, and loud, and I’m still not sure we wouldn’t have to be plugged in.
While we were at Ikea, not looking for mattresses, we discovered they sold mattresses, and they had them all out to try. They had all ranges, from futon style to full inner spring, with a full range of prices to match. We were looking for something with a memory foam layer, higher density foam underneath, not full thickness (headroom is an issue), and affordable, and they had a couple of models that fit the bill. We finally decided on the “Sultan Forestad”:http://www.ikea.com/webapp/wcs/stores/servlet/ProductDisplay?topcategoryId=15558&catalogId=10103&storeId=12&productId=41377&langId=-1&categoryId=16085&chosenPartNumber=70094364 because at only $250 it was a good compromise between price and quality and it gives us an extra couple of inches of headroom over the next model up. We can now sit on the edge of the bed without our heads hitting the ceiling. With memory foam mattress toppers going for $150 for a queen, it’s not a bad deal, and it should last long enough with the use it gets. We now sleep much better in the RV.