Replying to WHERE TO GO ???

Im from Hamilton Ont and me and a buddy are planning a trip across North America in Jan & Feb 2005 in an RV. The stops we have routed out already are in this order. Quebec (tremmblant), Vermont (Okemo, Stowe,) Colorado, Wyoming (jackson Hole), Utah (park City) BC (whistler), Alberta (banff). I was hoping for some info on the places that have sweet parks and great off piste skiing in Colorado, Wyoming, and Utah. Any body ???? What a sweet trip this will be............Credit is my friend.