Since I don't have a Whataburger, Backyard Burger, Krystal, or several other places mentioned I'd have to say Burger King. I've always thought their burgers were better than McDonalds, although I absolutely love me some McDonalds double cheese burgers. There's just something about it. For some reason I especially love it when the cheese oozes onto the paper and I have to scrape it off with my fingernail. Ok that sounds crazy but I just love it.