Cash only.
Even on a rainy freezing day, the line is 20 people deep. The customers here seem more serious than those at St-Viateur since they buy them in bulk (multiple bags worth).
Curiosity and greed got me to order a half dozen (rather than two). The poppy seed has a spongy consistency that I am not a fan of (might I say the sesame and poppy at St V is better?).
Blueberry. THE blueberry. In hindsight I should have ordered 2 dozen blueberry and brought them home with me to nyc. It was a crunchy outside and soft sweet inside. Delicious!!! I highly recommend this specialty flavor and since everyone has their own opinion about which is the best spot for Montreal bagels, you should test it out on your own. But note that the plainer flavors will lack salt, something I find across the board in Montreal cuisine but nothing a little butter and malden salt wont fix!