Replying to Mountains in the West

Allright heres my problem. My rents want to bring me out west as a christmas gift this year. Having only skiied the East I've thought about two things. The first is which mountain to ride. I can choose which ever one I want in the U.S. or Canada. I was thinking Whistler or Vail but I want some input from those lucky bastards out there that live or have skiied out west. My second decision will be when to go. What do u guys think is better, Febuary or April? All responces will be appreciated. Thanks a lot