It all depends on which 5 guys you go to. In my experience, quality varies between locations. Have yet to have Whateverburger or In-n-out, but I really do like Cook Out. That is my favorite when it comes to fast food burgers. Unfortunately the closest one to me is 4 hours away or something.
Otherwise I prefer my own homemade grilled burgers. I rarely buy burgers out anymore. Stuck at the office. Was hoping for a quiet day.... NOPE. Only 6 hours 15 minutes left.
And to think I decided to skip coffee this morning. Mind changed.