My reasoning for a Chevrolet 2500, for what its worth.

I didn’t consider a Dodge because I and everyone I know have had issues with Chrysler Products. Ford just doesn’t measure up favorably. Toyota isn’t anywhere close to having the carrying capacity needed for a 9 ft camper. Ford is marginal unless you buy the 350. No choice, really Chevrolet all of the way.

I just bought a 2004 Chevrolet 2500 Crew Cab LT with the 6.0 V8, and 3.73 locking rear end. The 2500 was the choice instead of the 2500HD because it had enough carrying capacity even with a Crew Cab and still had the Auto setting for 4 wheel drive. It is also 2 inches shorter which is a consideration for parking garages. Auto (All Wheel Drive) is a convenient setting for just in case time without negatively impacting gas mileage. I chose the 3.73 because it should yield slightly better gas mileage compared to the 4.10. I had a 3.73 in a 5.3 Avalanche and since it had plenty of power, I was sure the 6.0 would have plenty too. I didn’t go for the Quadrasteer because I didn’t think I’d get much use out of it.

In comparison, the Ford is Taller, Heavier, Longer, Rides worse (straight front axle), seats aren't as comfortable, doesn't have dual climate control, and has less carrying capacity. All in all, it’s only a choice about which Chevrolet to buy. BTW, I disqualified the GMC’s because the bumper in the trim package that I wanted had a painted front bumper.