I have day trips through the local ski shop available to okemo, mt snow, killington, loon, sunapee, and waterville valley. All cost about the same ($67 +/- $2). All include the bus trip.
I've mainly been riding the local hill, but I got up to attitash back a week or so- the mild blues were okay there, and the greens were good for me, though it took some getting used to the layer of powder at the begining of the day.
Simple version: where should I go for nice consistent wide-ish groomers, preferably without toooo many little kids falling in front of me?