Same here. my back used to hurt after the first nite. finally bought a eggcrate topper (cheaper than the memory foam) and cut to fit. now it is just as comfortable as our home matress. the heat comes through just fine.
2012 Georgetown XL 350TS, Hellwig front/rear sway bars, Sumo Springs, Blue OX True Center steering damper
2013 Ford Explorer LTD toad, Roadmaster Stowmaster 5000, VIP><Tow Brake
Better to have a bad day of camping than a good day at work!