Thanks for the prompt response,
@MEL_Traveller: much appreciated.
So, basically, the difference has to be >140 AUD to be of positive value for me.
I went looking at the different AC partners to see how to get home from DOH and I was provided with a convoluted, but intriguing, route of four flights over 40 hours to get home. This includes transiting through BAH and SIN, combined with a VA domestic flight for 110k (or 129k for flexible) Aeroplan points + <200 CAD.
(I can't find any availability with Velocity points or Avios (via QR), hence looking at alternatives.)
Has anyone else used Aeroplan points like this before? Any issues with transiting or ticketing?
It's something that I'd be interested in trying out (but would like to know others' experience with it, if possible).