If you like Bacon Butties and the Full English, then British airfields are the best. However if you are after a salad, Buffalo Burger, Carne Asada or fried Scorpions (Santa Monica) then the USA is definitely better.
I would avoid the "Giant Burger" of Laughlin though, I once had one, and it was like a Big Mac the size of a dinner plate. The last half (that I couldn't eat) stank the Seneca out on the trip to Sedona.....
Topography of the western USA is unbeatable. Islands, mountains, high desert plains, desert, heat and snow....all in one day.