As much as it hurts to say it, it must be said, Montreal has better bagels that New York.
St Viateur's bagels shut me up. They were perfectly soft and chewy and partnered up with smoked salmon it was just killer.
This spot is very cute and very packed. Come early or be prepared to wait. Don't worry, its worth it. Also know that if you are getting bagels to go there's a different line for that.