Sooo many options available, which lead to even more questions...
My advice is the same as others have said already, figure out what camper will do the job for you, and then decide on the truck that will haul it.. Too much truck is better than not enough.
A DRW 1 ton LB diesel crew would be the logical choice with the setup you are considering. That being said, I have had no regrets buying our current 6.2 gas, but it all comes down to personal preference.
Do your research, and lots of it.... Search the web for every specific truck you consider and check for inherent problems relating to it. Every engine/drive train and brand has its specific issues, some worse than others. Make an informed fact based decision and you will be less likely to regret your purchase.
