Jay Peak has expert terrain and a nice amount of snow but overall best would prolly be killington cause they got a huge mountain and a nice park. Honorable Mention would probably be stowe when it actually snows.
i would say for glades and pow pow jay is the place to be i was there this past weekend skiing waist deep pow in some spots.... park id go w/ mt. snow or killy
Loon for it's park but it lacks other good skiing such as glades and moguls (flume doesnt count). If Loon had some of the terrain that Smuggs or Stowe had, it probably be the best on the east coast. The same could be said for those two aforementioned mountains if they had Loon's terrain park.