I'd have to say Steak n' Shake hands down! Their delicious, bacon butter burgers, with a side of skinny fries (my fave). And if I want to top that off a nice vanilla milkshake, or if I want to be funky, I'll get a Reece's Peanut Butter Cup!
Usually when I eat any where else (besides Micky D's) I can't eat a whole burger with fries, but here I can. LOL strange!