I think Burger King or Wendys has the best burgers which makes sense because that is what they specialize in making but healthwise I did a project and found that McDonalds is actually waaay healthier. Burger Kings is one of the most unhealthy fast food restaurants : )
im in the u.k so i don't know places like that , but where i'm from i think mc Donalds os over rated , and has too much on them , in burger king it is simpley , thickish burgers with tomato sauce ( ketchup)