Badrap,
I've got both the H2 and HD2500.
This is my 6th Duramax and all of the trucks have been great but so has the wife's H2.
U didn't happen to get a spell put on u by chance?
If u get the truck the H2 wheels fit, only can go 285 BFG tires w/o lift.
I like the looks of the GMC way better than the Chevy.