Towing with a older truck

I was looking for a Ford Expedition when I found the screaming good deal on the Chevy. Since I'm not brand loyal I bought the Chevy knowing that they need a transmission overhaul every 80,000 miles or so. My transmission is still tight and given the miles it's probably been over hauled a couple of times. I work at a community college that has a big auto diesel program. I asked a student that has worked in a transmission shop for a few years: What brand do you see in the shop for overhauls the most, Ford or Chevy. He said Chevy 2 to 1, or more. But, he also said that in our area there my be more Chevys on the road so, it's not a scientific result. It will take me a decade to put 80,000 miles on this thing and it's paid for. Buying an overhaul every decade is OK. As far as other repairs... I bought this thing with a few known issues. Since I fixed everything in January I haven't had any repairs all year.