Good evening! I would like your advice about which of the two frequent flyer programs i must choose (i am a member in both). I am flying with Ba and qantas in April-May. I am going from Athens to London with a return flight operated by BA and a multi city trip from London to Wellington, Sydney,Melbourne and back to London with Qantas. It is my first time to fly with these airlines so i haven't collected any points yet on either frequent flyer programs. Since i live in Greece, i consider it more possible to fly again with BA (or one other European One World partner) rather than with Qantas in the future. So i would like to tell me what is the best for me to do: collect all points in Ba executive club, all points in qantas frequent flyer program or in both frequent flyer programs, depending on which airline the flight is operated by?