It's not a terribly difficult concept, just burgers and some few other options with quality sides and tasty boozey milkshakes. Burgers are a favourite food for me so I liked this place and have gone many times, never having a bad experience. The service has always been quick and attentive and when I order a burger rare, it actually comes out rare (this is more uncommon than you'd think and I am happy if I get a medium-rare burger when I order rare).
One thing I wish they'd add to the menu is a spicy burger, I know they have one burger with a bit of peppers but it really isn't spicy. For me a kick-in-the-ass burger would be a welcome addition to the menu.