This is a cool spot. It does live up to its name in that the restaurant has a posh, bistro like ambience to it. You can get burgers like a la carte by getting them in 3oz, 6oz, or 9oz sizes, so it's possible to mix and match to try different burgers. I had the Wagyu (kobe beef) and the Lamb, and they were pretty average. Meat wasn't extremely tender or anything and the bun was so-so. Sweet potato fries and onion rings were really good though. They have several four peaks and Grand Canyon pilsner on tap.
I think overall the food is par to a cut above par, but I don't think I go there for the food - it's definitely a fun experience everytime you eat at Stax and the varieties of burgers are what makes it. Check it out!