Three words: Incredible smoked meat.
I know my brisket. I lived in Texas for three years, and there's amazing brisket there as well - albeit prepared in a very different way. The end result is the same: incredibly tender, juicy, flavorful beef. That is what you get here.
This is a must stop, especially if you are a tourist in Montreal.
Tip: Get the fatty. Because it's more tender, more juicy, more flavorful, and you only live once.