Whistler. Think of this strategically.
Your parents are paying for it, and Whistler done right is definitely the more expensive trip. Getting to Tahoe with some buddies is an easy trip. The Reno/Tahoe airport is only a 45 minute drive from Alpine/Squaw/Northstar/Mt. Rose.....take your pick. Kirkwood is about two hours. Rent a car or take the shuttle and you're golden. Alpine/Squaw are right next to each other and it's an easy thumb-ride between the two. The beauty of Tahoe is that it's the poor college student's dream. Everything is close, cheap food is easy to find, and lift tickets are...well....lift tickets.
I can't give you an extreme breakdown of Whistler, but I remember from when I went, it's not close to the airport, airfare isn't cheap, the US Dollar sucks anywhere outside the US. Do Whistler. Take a raincheck on Tahoe.
They call me Captain Obvious.