Meh, I guess it's ok but I've been underwhelmed by most of the burger fad chains that have opened up here in the last few years. All are pretty mediocre when compared to the local places like
Ray's Hell Burger (best I've had; dogcatcher is the go to, big pun w/an egg a close second; unfortunately their fries are meh and the sweet potato fries are turrble), Good Stuff, 5 Guys (started here and was a local chain until the past few years), etc.
I'd put them near the top of the better than bad but not quite good chains we have here with Counter and Shake Shack; BGR, The Burger Joint, Elevation and Burger Tap and Shake are all horrible.
Like a few others said, I think Steak n' Shake is better.