My chinese prefolds are a bit wider and not quite as long, which makes me like the way they fit a tad better. I don't have to fold down the excess near as much, and they're easier to secure since they're wider across.
It seems like most people say the indians are softer, but my softest are my bleached chinese. The indians *are* very soft too, and they seem thicker and maybe a tad more absorbent than the chinese. They also fit more bulky as a result, though. I'm going through a stage where I like the trim fit, so right now I'm liking my chinese pfs a bit better.