I just returned from Big Sky. I had a great time, but I actually found their groomers to be the mountain's weakest link. Good groomers? Yes, but not great on the level of some of the other places mentioned in this thread. (Snowmass, Vail, Keystone) And like you said, Big Sky is the most ski-focused of any destination I've been to, and could leave a non-skier a little underwhelmed IMO.I recall Big Sky has good groomers but there isn't much except skiing.