I have to disagree with jd. Although Roundtop has had poor snowmaking conditions the past few years, the folks that do the grooming there are true professionals. I have skied there consistently for over 10 years. The staff is exceptional. They have phenominial ski instructors, some who have been nationally recognized. Their children's instructor staff is some of the best on the east coast.
The experience you have skiing has a lot to do with the attitude you arrive with. If you are looking for a family friendly resort that is going to cater to that group, Roundtop is the place to come back to year after year.