So the truck I originally bought for work was a 5.0. While it was a good truck and had pretty good fuel mileage for running around town and stuff, I just didn't like it.
My current truck is a 6.2, and I am much happier with it. Yes, the mileage does pretty much suck, and there's (most)days my 6.0 PSD gets more to the gallon than it, but I like the power and torque over the 5.0. Yes, it is still "slow", but I'm not usually speed racering around with it.
It also sounds pretty badass when you lay it out.