I have not seen much bad out of the Chevy or Ford full size pickups. Personally, I prefer the Chevys. The 1998 and older ones had the classic smallblock V8, which was durable and has been since it’s introduction in 1955. The 1999 and newer models had various versions of the LS engine platform, which is also bulletproof with it’s six bolt mains and easy serviceability. The trucks were also offered with a V6, based on the classic smallblock, but it is weak compared to the V8s and just as thirsty. A few years ago, I drove a Suburban with a 5.3 in it that had nearly a half million miles on it, still running flawlessly, powerful, and with no leaks or oil consumption. It’s 4L60E transmission had also never had any issues according to the owner. If you go 1998 or older, get a 5.7L (350). If 1999-up, get the 5.3L. If you are going to work the heck out of it, go 1999-up with a 6.0L in a 1500HD or stronger. I’m guessing, however, that a 5.3L in a half ton will easily meet and exceed your needs.