I've got to admit I never got on with Zool. I remember getting sucked in by all the hype when I was a kid but when I actually got the game home I was so disappointed as it was nowhere near the same league as Sonic or Mario. That's not to say I didn't play it through and have a lot of fun, it just didn't play as well or look as good as the best console platform games.
Superfrog, however, had a certain amount of polish and I thought that game would have done pretty well on the consoles. It's great to have an Amiga exclusive though! :-P
As for Kid Chaos I only ever played a demo but I remember being impressed with the speed and polish of the game. But something annoyed me about the 'Kid' himself.
How does Alfred Chicken compare? I never played but always intended to as it looked like a pretty fun game that wasn't trying too hard to be a 'console platform game'.