That there is a 70 metre drop at 125 kilometres an hour. It's fast and exhilerating.
Just as good, the seats and restraints. There are individual seats that are comfortable, and the restraints are just a single ergonomic "bar" (unless there's a better word for it) that just covers your legs comfortably, so that your upper body is free to move.
I could rave on, but I won't.