My husband and I have been to Wahlburgers a few times since they opened a little while ago, which speaks to the quality of food.
First and foremost, they use the No Wait app, so they win points in my book. The burgers are good and the ingredients taste fresh. We've run into some trouble with our burgers being cooked to order, but it was never so bad that we sent anything back. The service has always been good as well.
Four stars because of the a la carte menu style. You think you're getting a good deal for an $8 burger until you realize that fries are something like an additional $4 and mac n cheese is like $6.
That being said, we'll definitely be back again.