Many thanks Gardyloo,
that is exactly the expert summary I needed. Now it seems that I need to better investigate the UG opportunities to Australia for an AA EXP. I understand that the AA SWUs are not useful on that route. I assume that leaves me working out options on QF? Are questions about using my AA miles for QF UGs TPAC best addressed here or in the QF forum? I suppose I could also book QF Premium Economy, which I have heard on the grapevine is comfortable?

Thanks again for your help.

Lurker