Hey bellakarmina!
For Montreal, I'm at Studio409 and I love it there! For me it's the best, but that's just my opinion. There's also Candiac Pole Fitness on the South Shore. I know the woman who runs it and she's amazing too.
Other than that there's Alternative Fitness which is in the old port but I heard it was moving location (not sure), and Pole Fitness Jean Talon up by Jean Talon market place. There are probably a few others that I can't remember off the top of my head…. I think which one is best depends on what style of lesson you want, and how you like to be taught. So shop around, and maybe we'll see you soon!