Ooh, tough one. I like both, but I'm gonna go with McDonald's here, as I've rarely had a screwed-up hamburger there I had to send back (I'm not a fan of burgers with cheese on them; I strongly prefer just ketchup and mustard, since cheese is virtually impossible to get off a burger once it's put on), plus I like their fries more than Wendy's.

Speaking of burgers...hamburger or cheeseburger?