Went to Big Sky from Jan 16-20, 2008. They got snow every day we were there and at some times we were riding up in deep knee/thigh powder. This mountain is HUGE and very little crowd. You had so much room to ride and enjoy yourself. Lift lines were very short too. Everyone there was very friendly and made us feel welcomed.
We stayed at the Arrowhead Condos. Bruce, manager for Arrowhead, was awesome. He was constantly helping us out when needed and had a smile on his face every time.
We'll def be coming back to this resort in the future.