There are a fair few "Good" Asian sites out there in my opinion. If your traffic is all Chinese or Korean (getting less so due to the government regulations out there) then conversions are likely to be poor. However, if you have Japanese, Singapore or Hong Kong traffic then test out a few programs and see what suits you best.
I'm pretty sure we are the biggest Asian site in terms of members. Give us a go along with these others. See which one works best for you
DTI
Asian4you
Javnow
Hope it helps
jah