The OP has not stated what burn they want to use the points for, so it is impossible to determine whether AAdvantage or QFF is optimal. Lots of good points mentioned on this thread, for differentiating between the 2 programs. Aadvantage is particularly valuable for certain kinds of redemptions (ironically enough this includes Aus/NZ -- a fringe area for AA), while QFF is worth more when flying QF and not Oneworld. Also for specific routes QFF can be cheaper than Aadvantage (maybe 10% of the time), surprisingly enough. There is no single answer as to what is optimal for earn, burn and status. I've kept both AA EXP and QFF Platinum for over a decade because of this but have chosen not to get QFF P1 as it is simply not worthwhile. Finally many corporate fares on QFF, that are "flexible" also earn 0 on Aadvantage, so it might be a moot point for the OP. There are even some J fares that earn 0 (but unless OP works for Macquarie, this won't be likely).