I enjoy Big Smoke and have been going since it opened as Craft Burger.
I've tried most of the burgers on the menu and I still recommend this place to other people.
I have noticed over the past year or so that the consistency has been way off. The first dozen times I went, I was quite happy with my burger.
However, when the King Street East location opened around the corner from my office I have been more frequently and noticed a real decline in the quality.
At times I get a burger and it is perfectly seasoned and well cooked. Good char, and a little pink in the middle and very juicy. At other times, like many other reviewers have indicated, the burger can be dead on arrival.
It is disappointing that the quality is all over the map. I have noticed that during lunch rushes is when the quality drops but that is no excuse. This should be the time they are working to improve quality and drum up repeat business.
One more thing, I love the onion rings from this place. Awesome crust and they have always been prepared right when I've eaten them.
Of the 4 locations, I would try the King West location but try to give it a shot during non peek hours.