Wow Nolo, So many choices but....
I would choose Whistler/Blackcomb for these reasons:
I've skied on their glacier at summer race camps, but not in winter.
They have a huge variety and full range of terrain challenges.
Over the course of a season a full variety of snow conditions.
The Canadian ski world would provide a new and different sphere of influence offering different perspectives on what to play with and what to learn.
They are known for having a lot of great skiers that would provide great reference images.
They have a varied international customer base that would offer interesting off snow cross-cultural experiences.
The low altitude is easy to adjust to and ski hard all day at.
There are a fair amount of off snow activity options avaliable.
The exchange rate is quite favorable.
I found the people of the village friendly and hospitable.
It would be great place for fun skiing and meeting new friends.