Export probably is Luc Longley (pick #7?) ahead of Patty, that said Bogut was a #1 pick and has a ring so that is pretty important to consider.
I would say the best Australian player to play overseas is A Gaze by a fair bit, I would put Eddie Palubinskas in the convo based purely on his reputation but I never saw him play. Heal has to be somewhere in the top 5 I would have thought too.
Could be a great discussion piece too.