So after eating at about every 10 dollar burger place around here I find them all remarkably similar. I guess my favorite was Bad Daddy's Burger Bar. They aren't national although they have locations in 4 states. Still they had a high quality burger and the sweet potato fries were awesome. Everybody else was kind of bunched behind them.
Had one in the airport on the way to Chicago tonight. I love eating there (airport isn't quite as good), but it is more $$$ since it is a restaurant with tip. Probably double the cost for the family to eat there over Five Guys, although some of that is milk shakes for my kids. Honestly, one of the places I like in Charlotte a lot is BT's Burgers. More like Five Guys since it is an order up front/sit down restaurant and similarly priced, but a lot more options and milkshakes. Big fan of their sunny side up egg burger and the kids love going there when we go to the movie theater right next door.