Originally Posted by
Cathay Boy
Depends on the way you travel.
If you are traveling in J or F, there's little incentive to keep flying CX simply because of op-up, J --> F op-up is rare. However, if you got to DM by flying mostly Y, then I would say sticking with CX might be worth it due to higher chance of op-up as DM.
Otherwise, definitely get *A Gold, it opens up that much more opportunity for you as you fly other airlines.
It depends if you want to put mileage with other OW program. You can still checkin using CX then last minute change the FFP. I.e. After upgrade is issued.