Well don't go taking Tundra's for a test drive then. The power is intoxicating. I used to drive an Xterra (which I really liked) and after having the Tundra (and Hawk) for over a year now, there is no way on this earth I'd go back to any "mid-size" truck. The interior space to stretch out, the power on hand, the stability in winds and when pulling out to pass big trucks, the power, less of a need to weigh and consider every power robbing pound added in the camper, the power of the 5.7V8.......did I mention the power yet?
On our 3 week trip North to Tuk last July we averaged 12mpg with a very fully loaded truck and camper. That was fine by me, especially after watching a few Lifestyle Overland videos and the way worse mileage they were getting on the same trip with a 4Runner towing an overland trailer.
Full size is just a no-brainer for me. So far I haven't found too many off-road tight places I can't force the Tundra in, and the on road manners and interior comfort are just perfect.