Good topic, and I would have to say Kumba for the aesthetics and originality. However for a lot of others the launch and first 4 inversions on Hulk are just the dogs knackers. Until Kumba who rode a coaster pre 93, was it? quite like it?
I've never ridden Dragon Kahn but I imagine similar to Kumba with an additional loop and a bit less theming.
Why were only (is it 5 or 6?) sit downs ever made? I think that's quite incredible that the figure is so low; but also makes the ones still working that bit more special.