This is definitely my new favourite place to go for burgers. Burgers are absolutely delicious and I would go back again and again on nice days when I don't mind possibly having to wait outside the door in the lineup or eating outside due to the lack of seating.
The stuff on the secret menu is cool and all, but I don't suggest ordering something like the four horsemen of the apocalypse. Maybe if you can split it with a friend and don't mind paying $20 for a burger though. It's basically like having 2 burgers but with less bun. You'd most likely end up having to eat that with a knife and fork or with your hands, which will get pretty messy.