My 2007 Sierra crew cab has 190k miles on it. Its starting to rust and its time to trade. I’m not really interested in another GM as I have a stack of repair records that are an inch thick.

The crewmax Tundra and the crew cab 5.0 appeal to me the most. We have a 6000 lb camper that the truck will need to tow. Ive heard the 5.0 is really good on fuel and the tundra is not. Has anybody had both? Any insight would be greatly appreciated. Thanks.