Sonic 3 & Knuckles as a single entity is pretty awesome, but it's more because of the sheer size of the game than the actual quality. I can't really say which part I like better, because neither really works on itself. Maybe S&K does have a slight edge, because some of the levels are actually quite decent, and it has some interesting storytelling sections. But I can't think of any one level that I'd really want to play right now - it's only through the sheer epicness of the whole thing put together that S3&K becomes worthwhile.

