If the 2010's or 11's are all new, I think I'd wait for a year and buy a new one.... I just ain't got 50K for a piece of crap truck..... I'll have to stick to newused............
Pulled my 32 foot 16,000 pound 5th through the Snowy Range mountains in WY last week and it did a hell of a lot better than the 08 6.7 Cummins I traded in for it. But i guess it is not as good as the 01 7.3 I owned a few years back.