Started with a 01 Sierra with a 4.8 V8. Towed great and great on gas. Now have a 95 Suburban with a 5.7. I try not to tow with it because it's so bad on gas now.
Getting an XL Denali in a couple weeks with a 6.2 V8. Won't be the best on gas but a huge improvement over the suburban.
I also took the drive to BPS today. From Cambridge to Vaughn it was non stop idiots on the road the whole way.
I did manage to drop a couple hundred $$$ on fishing stuff, rod racks for the boat and a new anchor!