I have owned 4 F150's (1990, 1991, 1997, 2017) and have had two as work trucks (2013,2015). All of them were every bit as reliable as the 2 Tundras (2002, 2012) I owned.
The nice thing about the Fords is they have a damn near indestructible 10 speed and can be rated to tow and haul more than the Tundra could ever be rated for, plus it has better brakes. The aluminum body means zero rust issues and the aftermarket support is insane.
The 5.0/2.7/3.5 are widely supported by performance parts manufacturers.... not so much with the Tundras 5.7.
Well seeing as how you're jumping from truck to truck on a rather frequent basis, I wonder whether or not you've had the opportunity to analyze and compare each truck's reliability from a longterm perspective. The F-150 is very much catered to those who buy a new truck every few years because they bore easily.
10-speed I'm sure is well-built, though I'm not sure 4 extra gears really adds all that much value.
The Tundra's brakes, as far as I can tell, are bigger than what the current F-150 has, so I don't know why you think the F-150's are "better."
Aluminum can still corrode, and the aluminum body was more about weight savings than anything else.
The 5.7l does have aftermarket support, to include super-charging options, but honestly those modifications have little relevance for the average owner and certainly not for the person intending to own and use this vehicle as a longterm overland rig.
F-150 has a higher tow rating than does the Tundra, but oddly enough the Tundra has bigger brakes, a bigger rear differential and a bigger tow hitch. I honesty don't care too much for the best-in-class 1/2 ton tow ratings...they seem more derived from marketing hype than anything else. 10k lbs is reasonable limit, beyond which you're better off going with a 3/4 ton.
