I don't eat burgers very often (and actually the last time I ordered from here it was chicken), but I think Smashburger does very good fast food (and yes...it IS higher quality fast food, but fast food nonetheless).
The few times I've came here it's been takeout and normally I order ahead of time. Orders have always been correct (which should be a given, but it's easy to make mistakes on burgers with so much customizing). Like I said, the last time I ordered from here I had chicken (the "Arizona" style burger), and I was delicious. The chicken was cooked properly and not dry, and all the veggies tasted fresh. I believe you can order any burger with chicken, beef, turkey or black bean.
I also like that they have sweet potato, regular AND "smash" fries. Last time I got the later and they were really good. They come with herbs on them (I believe garlic and rosemary), which adds really good flavor. I also like that they're "skinnier" fries.
On the rare occasion I do want a burger/chicken sandwich from a fast food type place I like Smashburger and this location always seems friendly and efficient.