[sourdough]

OP I'll stay out of the diesel/gas commentary; I'm a gas guy and leave it at that.

As far as the truck, just get the 1 ton. Nothing about "you gotta have a 1 ton to tow an RV" stuff; just real life. I loved my 1/2 tons and didn't want any HD truck and drug my feet too long simply because I didn't. You won't regret the decision if you are going to tow.

I made the stop off at 3/4 ton but you WILL reach its limits. The one ton costs barely any more, rides about the same and is the same size - it just has a lot more weight carrying capacity which is what it is all about. Forget max tow ratings etc., look straight to the payload number inside the driver door. If you scale it look at the gvwr of the truck minus what the truck weighs. Those numbers will tell you what you can or can't tow.....and you will find a 3/4 ton, even though it looks like a massive truck, will run out of that payload pretty quick when you start looking at 11k 5th wheels.