Have been going to this location for several years and have yet to be disappointed with either the food or the service, so they definitely earn a solid 5-stars from me.
My wife and I both absolutely love their dessert, in particular the Dirt N'Worms and the Hawaiian Delight sundaes, but just about every flavor of the frozen custard is out-of-this-world good. I have never had better and was surprised to find something so insanely good at a fast food chain (albeit a smaller, lesser known one).
As for the rest of the food, I'm a huge fan of the Steak Burger and their #1 combo is a staple of mine when I'm in there. My wife and I have both enjoyed their chicken breast sandwich as well and it is hands down one of the best you can get at a fast food chain anywhere in Phoenix, especially for this price range.
Definitely not your typical fast-food fare and well worth a try if you want something quick and exceptionally good, but still fast-food-ish. The frozen custard alone is reason enough to go there, but there's so much more to like about this place. I will absolutely continue eating at this location and cannot recommend it enough, it totally lives up to the hype.