McDonalds. I know its terrible for me, but i love it and i don't know why. Its like Harley-Davidsons, i know their just over-sized American pieces of crap, but for some reason i love them.
However the best Burgerking meal i ever had would probably be better then the best McDonalds meal, but Burgerking around here is extremely inconsistent, as is White Castle, which would probably be the best food ever (forget fastfood.) If White Castle could figure out how to actually make burgers consistently good i'd probably spend 1/2 my time their. I probably only get a proper White Castle burger 1/10 times though, but its worth the gamble.