Really good, a nice alternative to Moe's or Chipotle with it's own unique flavors that help it stand out. The set up can be a bit confusing at first but once you get used to it it's fine. The kids meal sizes are a bit too small though, it wasn't even enough for my 4 year old much less my 6 year old.
My first attempt was pretty bland and definitely a 3 star experience but my second was good after I figured out how to really layer up the toppings and sauces.
The main reason for a 4 instead of 5 is the prices and confusing set up (you can't see the menu board from against the counter well part is on one side the other around a corner).