Never been, but I've only heard great things about Berkshire East. I was supposed to go a couple years back but their wasn't much snow. Hopefully I make it their this year.
Jiminy Peak, despite the hate that it gets on this board is really good. Not steep by VT standards, but one of the steepest places in MA. Sucky thing is that they groom everything to death. When I say no moguls, I mean 0 moguls. There's some off the map trees where, on a snowy Saturday two years ago, I lapped em for 2 hours and my tracks were the only tracks. Not another sole off-trail. You can really pile on the vert, too. Up and down in ten minutes using the six pack. You can easily hit 40,000 vertical feet in an 8 hour day. Very "resorty" feel with the village and slopeside condos. You pay for it too. The place ain't cheap and there aren't many deals, but if you can catch a E-coupon day (
http://www.jiminypeak.com/e-coupons) it's cheap. There's also a 2-for-1 in the NY Entertainment book, I do believe. I usually go 2-3 days a year.
Catamount is slowly building a rep on this board and out in the "real world". 1,000 vertical feet of varied terrain on a ridge. Catapult is steep and pretty challenging when they let it bump up. There's always moguls on Off Stage and Glade. Narrow trails and wide trails. Ridge is fun when you full-throttle it. On weekends, the triple and mid-mountain double get mobbed, but the summit quad and summit double have a 5 minute wait or less. Base lodge and parking are usually full by 11am on Saturdays. Despite what I'm writing, the main mountain remains uncrowded. $25 midweek tix. Expensive on the weekends, but theres $50 weekend tickets if you're a ski club member.
I went to Bousquet once. AWESOME "classic" trails. New England style chutes. Limited snowmaking, limited grooming, nice old double chair.
And no matter what they tell you... do not go to Butternut. Boring terrain, slow lifts, crowded trails, long lines. The terrain by the triple is nice, but that's where the on-mountain pros stop. I only go early season and late season because they'll cover half the mountain for opening weekend and close 100% open for closing day. $25 midweek tickets is a deal, anytime $25 tickets starting mid-March is a steal.