I'm probably in a minority, but I consider McDonald's fries to be the best among fast food fries. Chick-fil-A's waffle fries come in second, and nothing else is in the running. Burger King has better burgers, but their fries are awful. Five Guy's and Jake's Way Back Burgers? Meh!
Note: There aren't a lot of other options left around here, anyway. We still have Wendy's. Arby's is gone, Hardee's is gone, Roy Rogers is long gone. We've never had In-and-Out Burgers around here. Never even heard of Steak and Shake. No Whattaburger, either.