I've had Five Guys, and while quite good, it's hardly better than In N Out, and certainly not by any large margin. Plus there are hardly any around. Their fries are great in a more-grease-more-seasoning way, but you could have similar fries at Rally's.
ETA: I'd say Five Guys and In N Out are about even, with the tie breaker going to In N Out for being more accesible as well as a SoCal original.


