I like Five Guys but it is SO overpriced. I walked into one a month ago, saw it was over $8 for a hot dog, and walked back out.
My workplace had a blind burger taste test for fun a few months ago. Everyone that participated tried burgers from McDonald's, Burger King, Five Guys, Whataburger, Cookout, the Varsity (Georgia tradition... you want to talk about grease, get the onion rings! But they are yummy...), Wendy's, and Culver's. Everyone was able to identify the McD's burger. My favorite turned out to be Cookout, which surprised me as I expected it would be the Five Guys burger.