I drove diesel duallys for years while working in the Ag business, afterwards I traded for 1/2 ton pickups but was never completely happy and after getting back into trailer camping with a 1/2 ton towable
I stayed with gas until it was obvious that it wasn't going to work. After a brief (3 years) of a F250 diesel I'm back in a dually diesel and see no reason to ever go back unless I totally give up trailer camping.
Don't let the horror stories folks use to justify driving gas pickups.. The upkeep year to year isn't that big a deal and is even comparable to the gas trucks. But the ease of towing is incomparable between the two, apples and oranges.
One word of advice I'd offer you... bigger trailers lead to even bigger trailers and if you don't want the cost of experience to keep adding up... go big truck then next year or the year after you won't be right back here looking at a bigger truck to pull your new trailer...
I got that "T-shirt" and it cost me about $20K...
