Okay, I've decided, it is Stealth.
No ride is for everybody, and sure the length of the ride is short, especially if one has to queue for an hour, or in fact for any time.
It is the most intense ride on the park, I believe, and gives the most extreme G. The launch, wow, the sudden change of direction, the bump over the top, the free fall, and the severity of the brake run, oh, and the half second view of London.
The downside, rain and insects hurt on impact at those speeds. (one beastie actually burst on colliding with my hand yesterday, and it wasn't until I'd been able to clean up that I could see it hadn't broken my skin)