I would never consider myself a club-goer. However, when my feet feel like dancing and I'm in Montreal, I head to La Boom. There are three floors to La Boom all with different music and each with a unique ambiance. I typically frequent the 3rd floor which is usually dominated by top40/pop music. That's not to say that I didn't have a great time on the 1st floor reggae/rap scene.
I found their drinks were reasonably priced for a club and the cover was not bad. I would HIGHLY recommend this place because if you don't like one floor, you still have 2 more to choose from.