jin's freestyles are nice but as far as actually songs and stuff, i haven't been impressed. learn chinese, in my opinion, was terrible. but he does have a lot going for him, considering wyclef is producing and ruff ryders seems to be behind him.
if you want really good asian emcees, go with the mountain brothers, who are better than jin in my opinion. you can check some reviews of them at
www.rapreviews.com, but as far a website for them, i'm not sure.