If you wanted to stay closer to Newfoundland you could try Sugarloaf Maine. It's one of the largest single ski areas in northeastern US and has good terrain variety and a large vertical drop (2800'). rivercOil suggestions are all good. For good terrain, small crowds, and slightly lower costs than more famous areas to the south you might enjoy a couple days each at Jay Peak and Smugglers Notch, which are fairly close to each other in northern Vermont. Have you skied LeMassif on the St. Lawrence Seaway?
There is nothing wrong with the big name places too, like Stowe, Sugarbush, and Killington. I like Killington, but beware of crowds on weekends and holidays.
I never heard of your home ski area Marble Mtn, pretty sizeable place with 1700' vert, excellent website: http://www.skimarble.com/photogaller.... jpg&lang=en
Unfortunately, a little off the beaten track for us southerners.