I've owned several Chev. tow vehicles and they were OK, but just OK. I bought a Ford tow vehicle 10 years ago and have never went back to chev.
I have a 2006 Superduty Ford F-250 with a turbo Diesel and it pulls and rides like a dream. Exponetial power, perfectly transmission match, smooth ride, towing my Airstream up or down mountians. I average 16 MPG.
If you tow a load, a 3/4 ton frame with a larger engine, heavey duty transmission, and brakes is the way to go, no matter the mfg.