There is something simple and good about a McD's cheeseburger. Price helps, too.
I just had a Five Guys bacon cheeseburger on Tuesday. They have gotten incredibly expensive ($9 not including fries). It's a very good burger, with the added bonus of so many more condiments available compred to In-N-Out. That said, In-N-Out still wins. Baby Swede also had a bacon cheeseburger, and she said she prefers In-N-Out, too.
I had Culver's last week. Their patties always taste... burnt.
Being the oddball that I am, I would also rank White Castle much higher (seriously, like
#4 or
#5 ).