Don't overlook the Cooper Discoverer AT3. My F250 came stock with the BFG Rugged Trail (absolute garbage in snow/ice) and I could not wait to replace them - Got the AT3s last year. Have used Coopers in the past with very good results. I have 17" rims, but the tires I have now are load range E.
On edit - looks like you made a good choice. I'm sure you'll be happy with the Coopers. Of course as you mentioned not every one who reviews a tire carries a camper, and a lot of how you like the product will depend on what kind of driving conditions you encounter. As for me I am very happy with the AT3, and I do use my truck/camper in a wide variety of road environments.