Chatime is by far my favorite bubble tea in Montreal. They are the only place I've found that actually gives you proper 30% sugar, 1/2 ice when you ask for it - other places still end up giving me a cup that's essentially 5/6 ice and 1/6 sugar water.
My favorite drink at ChaTime is the Passion Fruit QQ. It's just one of those drinks you can get on the streets of Taipei but that are hard to find elsewhere. The passion fruit tastes surprisingly natural and the jelly and tapioca are of an enjoyable consistency.
My only complaint about this place is the price. So expensive but at least they have a rewards card that can be used around the world!