Fiveguys is so good I dont even consider them to be fast food... its just sooooo good (both burger and fries, which is the entire menu pretty much)
My fav place out in ohio is Wendy's or sometimes, rally's. but i hardly ever get fast food to be honest. Actually, my favorite is popeyes or church's chicken. When I lived in CA it was In-And-Out or Carls Jr. (hardees is owned by the same, and has a very similar menu, but its nowhere near as good, at least to me).