downwind, I guess it depends on the Quality ,(or should I say thickness) of your wallet. Most the overseas endorsements take approximately 3-4 weeks but very concentrated and give you the knowledge required. Qantas takes much longer and obviously goes into a bit more depth,(however do not proceed as quickly as the shorter structured courses), but is much more expensive. I have herd very good reports about Endorsements Australia who are very busy and booked out until Feb. In answer to your question I would say Qantas would give you the best grounding to start your line flying, but at what cost?