I never tried whataburger... hmm now you have me interested. :) theirs also a couple burger places on the west coast that i heard are pretty good that i never had.
Basic Whataburgers are the best of the fast food lot!
The buns are 5"; the patties are 1/4-lb'ers, but "double-meat" is a regular menu item; the meat is extra-seasoned, with lots of black pepper, and what tastes like a rub of powdered onion, garlic, Worcestershire, bouillon, but probably isn't; the standard dressing is mustard, which mingles deliciously with the seasonings, the beef juices and the freshest, sweetest chopped onions and chopped lettuce (I love that!) and the pickle juice - it's almost dressed like a hamburger sub! Tomato-lovers get three fat, fresh slices (I don't eat those myself, but I've seen them, of course.)
Whataburger and I were born 11 months apart in the same place (I'm older and had to be without them for almost a year, plus the bottle and baby food years following).
Whataburger's what all burgers really ought to be.