This is right down my street, but I went because EVERYONE tells me it is the BEST place in Montreal. This comes with the disclaimer that although there are alot of sushi joints -- but not alot of good ones. This is my second sushi place in Montreal, and it was really good. The sashimi was excellent -- yellow tail, salmon, tuna -- the rolls are good and BIG and very creative. The unagi and octopus were also good. We had a few appetizers and the scallop one was heavenly.
It wasn't cheap, but worth it. I would definitely go back!