Walking through the food court at Westmount Square amoung all the standard food court places you see Sushi Bar Kim, a small restaurant with a sushi bar and seatting area. Your first thought may be "I'm not about to risk it on a no name sushi place in a food court". Although I understand that logic you'd be completely wrong. Sushi Kim is a hidden gem, one if the best sushi restaurants in Montreal.
They have a good selection of standard sushi along with some very nice house specialties and all of the rolls at Sushi Kim are available with an option of rice paper instead of seaweed.
One thing to note is that one of their chefs recently left to start his own restaurant, Park, and I'm not yet certain if his departure has affected the quality of the food at Kim as I have not eaten there frequently since he left. This is the only reservation keeping me from giving them 5 stars.