Now... Chicago has really upped its ante when it comes to halal burgers, so I may or may not be biased...
We came in shortly before closing time and our order was prepared fresh. The cashier got frazzled (we did have a large order and it was the end of the day) but she had to repeat our orders many times and still managed to get some things wrong.
The burgers were indeed good and fresh, although slightly overpriced (but because of the sustainable and socially responsible quality of the meat this can be understood)
Tl;dr? Burgers = good , slightly overpriced, not good enough to want to frequent the place, but fresh and socially responsible option that's open until late