As I said, if you will be taking Y on CX it will be wise to choose MPO, since you can get miles for K, L, M, V tkts on AsiaMiles but not AAdvantage. Also, the 30k+60k thing only happens if you start from zero. If you are already a SL then you simply need 60k in your membership year to achieve gold. If you'd rather have me explain to you in Chinese to make things clearer for you, PM me!