An excellent stage that I keep coming back to. I wish falling off the track was a bit more of an inconvenience and a bit less of an instant-death, and I'm just never going to be a huge fan of wind lifts, but the flow is excellent, the sense of speed is incredible, and I love the use of slopes, even requesting slope jumps at several places.
Add on to that an excellent atmosphere for both acts, and one that changes between acts at that, and you have a truly great zone.