Compared to In-N-Out, Whataburger definitely tosses more food at you. The double burger is a solid 150% as big as the equivalent at I&O, although you do pay a little extra dough for that extra beef (or mystery meat, however you prefer to think of it).\n\nI still don't like the fries. But they made up for it by actually pushing in the buttons on our drinks to indicate which was Coke and which was root beer! I don't believe anyone else has ever done that for me, and it felt special.