I wouldn't want to ride Crystal (or anywhere up north) for an entire week either.
I need to get Boyne under my belt but outside of that how do the other places compare to Crystal/Cab?
Nubs is nice. They have a cool boarder-X course. Usually a very good park setup as well.
Boyne has some long mellow runs which I love to just mess around on. They also have a fairly challenging steep... although not as challenging as the South Peak at Cab or Loki at Crystal.
I hear Boyne Highlands is really nice with tree riding as well.
Schuss I was only able to do the mile long run on. That was is mellow as well and also has a ton of side hits and banks.