Definitely different from Mt. Snow - Attitash is the smallest ASC resort. Attitash itself is more of a "classic New England" area, narrow windy trails. The newer Bear Peak is my favorite of the two nowadays - steeper, wider, straigher down the fall-line trails.
Of course I'm coming from the upper-intermediate perspective, not the "ski god" top 97%
There's stuff on each mountain I haven't done that may be more up your alley.
I used to love Attitash years ago back in High School when my youth group's annual "big" ski trip was to go up to Jackson NH. We'd ski Black Mtn, Tyrol (now long gone, see the NELSAP), and if we were very lucky, get to go to the "big" mountain, Attitash. They used to have a limited lift ticket policy (obviously that wasn't ASC!) and it was definitely a treat to be on the "big", uncrowded slopes.
It was weird the last time I stayed up there, at Attitash Mtn Village, the condo complex directly attached via tunnel to the Attitash base. They were prominently handing out discount coupons for Bretton Woods 20 miles up the road. Obviously ASC didn't buy the condo management contract!