Flying from CT, I'd look and see what the best ticket options might be for cost and direct flights. If you are thinking Mt. Hood (long haul) or Utah (Snowbird would be a great option), then I'd scrap the idea of A-Basin. They have a long season, compared to most CO resorts, but their base is scrap, this year. Currently the A-basin base is comparable to that of Stowe.
I hit Snowbird during the last weekend of April, last year, and caught a 16-inch snowfall weekend. Plus, Snowbird is so easily accessable from the SLC airport. I am usually able to ride the first 4 or 5 hours of my last day, get off the mountain drive directly to the airport and catch a direct flight back to philly; having me home by midnight.
The west is getting pounded....go get it!
Traveling the States and Taking Pictures