Deer Valley - Ignore all the jokes about this being the resort for the 1% of the 1%. It is, but that means there's plenty of fresh snow left over right off the trail. It's more of a ski "area" than a ski "mountain," but there's plenty of good skiing. Food is great.
That's what I loved about it too, we were there days after the last storm and but skied 2' of untouched powder in the woods all day! There were lots of people there, but they all stayed on the groomed runs.