I would drive them all, and choose your liking. All of them offer so much payload and stability, all in my eyes are good trucks. I have used GM 6.0 power now for about 8 years. Never an issue and no complaints on power. I just recently purchased a programmer and love the results on the shifting and getting the TQ management severely reduced. Even though the GM offers just a 6.0 displacement, that engine does wonders. Watch the TLF reports, they do a good job explaining some of the difference. If I was shopping again I would try all 3 and choose my fav. Good luck and keep us updated!