We have an '08 Chevy 2500HD duramax diesel/allison tranny with factory equiped tow package, 4x4, crew cab, short bed. This 3/4 ton is more than enough for our 25FB, but I have dreams of full-timing someday, along with trips out west and to Alaska, so I bought a vehicle that could handle the possible future for us (did NOT want to have to buy a new truck in order to get a longer AS!).
Very happy with our vehicle, drives like a dream, no problems at all. Would also have been very happy with Ford's F250, similarly equiped, loved the looks of it, it is rugged and sexy, plus it has better toys (power mirrors, step stool built into truck bed door, built in back up camera!). BUT it was the first model year of that engine, it drives like a truck vs chevy's more carlike ride (I was used to a minivan and have back and hip problems), AND Chevy offered me the absolute best deal. Decision made. I still practically drool when a black F250 (FX or Harley Davidson version) goes by!
Not sure how gov't takeovers, etc, has affected the product, not sure how Ford's new engine worked out, would have to look into these things if making the decision today.
BEST decision I made was that I bought the AS first, then made sure to find a TV suited to it!