Replying to Spring break in Whistler?

I am trying to figure out where to go for my senior spring break which is the first week in april. I was wondering how Whistler skiing is at that time. I live in MI and go to CO every year for a week and have been going there forever so I want to change it up a bit. I was thinking Whistler or maybe Banff? I am thinking about going to Montana State next year, so I will be skiing Bridger and Big Sky a lot, also I have a friend in Jackson, WY so I can ski Jackson Hole easily. Any thoughts on where to go? (besides cancuun)