Le Massif became a letdown for me. The view is pretty epic, the moguls are not too bad either. Their park sucks hard. Bring your carve skis and make sure they are sharp as fuck. Gets pretty icy there. On powder days the place gets tracked out like crazy. The Mount A Liguori is a fucking joke...its a short hike in, but the terrain tend to be pretty flat.
Mt St Anne is actually my favorite hill of the 3. La gondoleuse, Sept Chutes, Le St-Laurent and La Crete are the best runs on the mountain. Their park was a rail park last time I was there 5 years ago... They might have put in jumps when the RCR put jumps back in their parks a few years back.
Stoneham is a decent place to ride. Their superpipe is out of this world... and scary as fuck as they dont really maintain it much. Park is pretty rad. I recommend doing the 41-49 (48-49 are always closed) those are the best runs of the mountain.