I see a lot of guys here are content with their 6.2 gassers which is cool and all but please don't go slamming diesels because they cost more and you "claim" you can fly by one on a hill pull. Maybe an old diesel, but it aint gonna happen against a newer diesel considering all things equal...
I came from many years of pulling my 7500lb toy hauler with a 01 2500HD 6.0 gasser over the Sierra Nevadas. Yeah it got the job done and was a very reliable truck but for me the move to a diesel (2012 Dmax) was all about "the experience". No longer do I have to anticipate hills or worry about approaching traffic. Now all I have to do is set the cruise and forget about it. IF I need to slow down or speed up a bit just tap the steering wheel controls and I'm done. My kids couldn't even watch a movie in the back seat of my 6.0 without wearing headphones. Pulling 2nd gear at 4500RPM is NOT quiet and the constant downshifting/upshifting does not provide a relaxing drive. The same drive in my diesel feels two hours shorter just because I'm in a much more relaxed state while hauling and I can actually have a conversation with others instead of having to be so focused on the road and maintaining my speed.