Hey OP, since this is your first trip out west from the east I would strongly recommend you pick different resorts. You are going to be overwhelmed. Like others have suggested, Utah might be a good choice. Whistler is overkill and WAY more expensive. I've been both places and am completely in love with Utah.
I have buddies who have taken trips to both resorts their first time out west and loved it so thats how I got the idea. What do you mean by overwhelmed? Is it the fact the mountains are alot bigger and more to handle. Im also looking into Park City, but I truthfully think its going to be Whistler.