I try not to eat burgers too often but if I have a craving I will make a trip to Burger Bar. It is the best place for burgers in Vegas and probably anywhere I have been. The Kobe/Wagyu beef burger is my favorite. A good way to get it is on a potato bun, caramelized mushrooms/onions, swiss cheese & peppered bacon. I highly recommend the zucchini fries as a side.
If you have room for dessert the sundaes and milkshakes are great but the only time I have been able to try them is when i only eat half of my meal and take the other half to go.