Also to chime in, I like Sonic 2 the best out of, well, all the Sonic games. I can see why people would think 3&K is better, but I've never beaten that Carnival level (even though I know how to now!), so I can't really say.
I still can't tell if Oil Ocean is good or bad. The only really solid fact I can say about the Genesis Sonics is that Labyrinth Zone is the worst stage by far. It might actually be my least favorite stage in any game.
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chumbucketeer fills cups like double-Ds.
http://img.imgcake.com/chumpngej.png - Art by BIGPUN9999