Every time I come to Montreal this is the bagel shop I stop at. It's my favourite of all the bagel places. Not only are the staff friendly, the bagels are the best -- perfectly hard on the outside and soft on the inside. I bought a dozen mixed classics to bring home with me which were less than $10. Even the specialty bagels are less than $10 for a dozen.
You can also sit in and eat at the tables but they are usually very packed and I don't usually dine in but when I do, the dishes are quite tasty!
Overall, this is a must visit when in Montreal! There are plenty of street parking and Bixi bikes around which makes it easily accessible! :)