I agonized on going for either a Toyota Tundra or the F250 for towing a 2018 Flying Cloud 25FBT. Finally choose a used 2014 Tundra Platinum , and it has been more than capable of doing the job safely, and with high reliability. Fuel tank is 26gal, and so I evaluated whether to upgrade to a 48gal tank.
Nope I did not do that, cuz we actually enjoy a fuel stop every 3.5 hours to stretch the legs and grab a coffee. So the 26gal tank is perfectly fine. Also the xtra 22 gals of fuel would add 160 lbs weight.
My original hitch was the Propride3, but I struggled as a towing beginner with this hitch, so now using the Reese Steadi Flex, with 1200# bars for both Weight Distribution and antisway. I am comfortable with my Tundra, and have also seen a 26U and a 30 Classic being towed by a Tundra.