The Ikon Pass is unlimited at Stratton which matches Mt Snow and then you get Killington and Sugarbush for 7 days each.
I still say it is a better value to get either an unlimited K pass (which would include Pico access unlike Ikon) or an unlimited SB pass instead of Ikon if you're only using Ikon for Stratton/K/SB. Killington is only 20-25 minutes further than Stratton from the North Jersey area so I don't see the point of bothering with Stratton for that little of a difference.