I've only skied Sunday River this year of those three, but i can that you should be choosing between Stratton and mount Snow, and based on what I've heard about Mount Snow, I would go with mount snow. If their course for the dew tour is any indication, it should be ill.
Ah I'm so mad right now. The mountain I ski at is owned by the same people as Mount Snow (Peaks Resort) and our park sucks. Granted it has been much better than previous years. But our park is so empty and the jumps have no landings. And I try and talk to the park people and they are impossible to give recomendations to