My first post, so I'll keep it short. Travelling SYD-MEX in May. Cheapest Oneworld D fare seems to be a CIR (22,000 miles) SYD-HKG-YVR-DFW-LAX-SYD at a cost of AUD$7K. From DFW I will purchase a separate economy fare and take AA to MEX and return to DFW. Any cheaper way to get to and from AUS to the US using ONE in business? Any comments appreciated...