I heard EuroDNS will provide a asia contact for you. Seems like a pretty important feature that all of the registrars would want to offer you.
See this is what im after, where the registrar will provide the one neccessary asia contact, if most are doing that then im sorted, as long as my ownership of the domain would be secure enough im happy to do that, id prefer to do it with the medium to larger sized and established registrars if i can.
BTW, a tip if you plan to order .asia domains and want them as cheap as possible with godaddy. Put 3 of them in your basket, it will total to $60.57 Then apply the gdp0341h code and you will get a $15 discount, which is around 25% discount.
I believe .asia isnt a great tld to investment I believe godaddy.com offers .asia (But not cheap) but u can drop the price using coupons..