In addition to Vermont, check out Plattekill (NY), Belleayre (NY) and Elk Mountain (PA). All are still ~3 hour drives from NYC, non-rush hour. (From what I've heard, they are roughly equivalent to what you get for the 3 hour drive from DC to Timberline, WV.) I agree with Denis, trying to leave/re-enter NYC area during peak times is worse than here in DC. If you can believe it. I grew up in Connecticut, relatively close to NYC, and drive past the NYC metro area several times a year.
Denis is spot on about Hunter. Also, for the drive/skiing trade-off, it may also pay to check out Gore and Whiteface in NY vs Vermont. Just a random thought. But I do love me some MRG, Sugarbush, Stowe, Smugg's and Jay.
for skiing the Northeast.
My best advice for a skier living in the New York area: make a lot of money very quickly so you can retire at age 50 and move to ski country.
Best of luck. Adopt a mountain up there so you can show us the powder stashes when we're up in that neck of the woods!