After for lurking around for a while, I may have decided to pull the trigger. I am looking to buy a 2016 Dutchmen Denali 307RLS. I can tow with the F250 without being over weight (on the higher side, ...
I would recommend the 2015 F350 SRW. I too recommend the 4WD but keep in mind that that feature reduces towing capacity slightly due to the added weight.