I came here 2 years ago for lunch and I haven't been able to stop my mouth from watering every time I think about the burger I had here. The build your own burger is an awesome idea! I forgot which bun I had with my kobe beef, swiss, portobello, and avocado burger with a side of sweet potato fries, but it was the best burger I've had so far. I didn't get a chance to go back when I was in Vegas last year but I will not leave until I have my burger from Burger Bar when I go next month!