Taste: I really enjoyed the burgers here. The only reason why it doesn't get 5 stars is because In-n-Out will still always be the reigning champion on the west coast! I got the ShackBurger with pickles and onions, and their crinkle cut cheese fries. The burger was moist and the toppings were fresh, and you can just never go wrong with cheese fries. In addition, I have to say that the burger is actually visually appealing as well.
Service: Line seemed long, but every one was being served fairly quickly.
Value: Prices were good. The burger was $5.29 and the cheese fries were $3.99.
Ambiance: Nicely designed. More "upscale" than your local In-n-Out for sure, but I would rather go to In-n-Out every time!