Crested Butte has some of the best terrain I've ever skied. Just be careful not to book an early season trip there. We went there last New Years and none of the good terrain was open. It really sucked.
That said, CB is awesome. This year, we're just waiting for it to dump. When it does, we're gonna throw our stuff in the car and go.
The year before last, we went last minute when there was a storm coming and skied steeps in powder the whole time. it was one of the best trips of my life.