No matter which location you frequent, shake shack never disappoints. Their location on the upper west side probably has the shortest lines of the branches, which isn't saying much, but its worth the wait. Went here Sunday and the line was out the door, but the line moves quickly. Split a shack burger, chicago dog, fries and custard with cider donuts and caramel mixed in with one of my friends. It was decadence at its finest. They make such a great burger there. Their hot dog is messy but has all the works and tons of flavor. And their custard is the perfect ending to the meal.