Love this place! We are local and eat here weekly if we can. The Fungi burger and Steakhouse burgers are killer. The meat on that Steakhouse is just unparalleled. These were my staples until I tried the Rising Sun, which was the best burger I've had in my life. The Oreo shake is good. They have really good sweet potato fries and onion rings. Good for a kid-friendly place on the strip. Good service. Also, you never have to wait too long.
If you're debating between BurGR and Holstein's, BurGR has much longer waits, not as good service, and it's harder to get to (if you drive your car). The burgers are comparable with a little more refinement going to BurGR. However, BurGR has better fries (truffle) and shakes - OMG BurGR has good shakes, really more like dessert.
If you want a quick bite or have kids, Holstein's is your best bet.