Banh Mi Cao Thang churns out the best banh mi - Vietnamese hoagies - of all the Montreal sandwicheries I've tried, packing amazingly delicious ingredients into crispy baguettes. Their sandwiches seem smaller than those of their competitors, but they pack a tasty punch, especially if you ask for hot peppers with your order.
At about C$2 a sandwich, they're not expensive. Like many others, this shop has a "buy 10, get 1 free" special. We ordered about 15 to go, and the nice sandwich-making lady gave us a bag of hot peppers too. (Their hot peppers are wicked hot - they use tiny, thinly sliced Thai red peppers, not the larger green ones!)
Recommended for quality banh mi.