Well, I can't speak from experience, but this year Transworld reviewed their top five picks for East Coast resorts as voted on by readers.
Here's a short summary of each writeup done by TransWorld.
1 Loon Mountain, New Hampshire
This seems to be an obvious choice as far as the East Coast is concerned. Transworld reviews it as having "everything from excellent food, to speedy lifts, dependable snow quality, and a welcoming vibe..." plus "top-class accomadations" or "cheap lodging, drinks and food" only a 25 minute drive away. It has a 3600 foot park, also rated number 1 in TWs review, along with "side-of-the-trail jibs and secret lines" to keep you busy. If your not ready for hardcore park shredding, work up your skills at their Burton Progression Park. And if you're into it, try their Super Pipe. It's also rated the best East Coast pipe by TW.
2 Okemo, Vermont
Okemo has a selection of great parks, pipes and terrain. The near by town offers riders cheap accomadations and a great local shop. It's pipe is rated number two by TW aswell.
3 Mont Tremblant, Quebec, Canada
2000+ feet of vertical and over 94 trails should be enough to keep anyone occupied. After a long day of shredding, check out the village with bars hotels and retaraunts.
4 Sunday River, Maine
This season Sunday River "stepped up their game" offering "more time to their parks and pipes. It's located a short time from a local town "which offers all the necassary amenities for a weekend shred getaway."
5 Waterville Valley, New Hampshire
Waterville is said to be a great overall resort known for it's parks and pipes. The nearby town of Plymouth offers cheap hotels, drinks and food. TW rates its park number 2.