First off, I loved their comfy red leather stools and booths.
I got the classic burger with cheddar cheese, because I feel that is a good way to compare burger restaurants. I agree with some of the previous posters that the burger was a bit on the dryer/well done side compared to some of the amazing burgers I've had before. And the bun was on the bigger side. A less cooked burger, and a smaller bun, would do wonders for this place.
I'd go back because I work in the area. Not a bad burger, but I wouldn't make a special trip to go there. It was better than Big Smoke on their worst days, but not as good as Big Smoke on their best.
The best burger in Toronto for me still remains The Burger's Priest.