Sushi Momo is my favourite restaurant in Montreal! It used to be located by Duluth and Saint-Laurent, but the location has moved quite a bit farther (just north of rue de Bienville on Saint-Denis), which makes for a nice walk. They used to do delivery as well, but I do not think that's an option anymore.
With that said, the walk is always worth it because the food is amazing. I honestly can no longer eat sushi anywhere else. Everything is super fresh and made right in front of you. The menu is now completely vegan, which is awesome. There is also a menu solely containing gluten-free options, which is extremely accommodating for those with allergies. The restaurant itself is a lot bigger at this location, but still nice and clean. I've heard complaints regarding the service, but I've always been treated super well.
I would recommend this restaurant to anyone and everyone, vegan or not. You won't regret dining here!