Thanks. As I see A3 needs 20,000 status miles for *G wherease AC needs 35,000 and both TK and OZ 40,000. Does that mean A3 is the way to go?
Any disadvantage with A3? Once *G is achieved how easy or difficult is itto retain the same? I read somewhere that converting A3 award miles to award flights / upgrades is difficult as they don't have an online system and one has to call them in Greece. is that true?

many thanks for your help and guidance............Shailendra Bansal