Check out the Aeroplan/Altitude program changes just announced on the Aeroplan forum. Quite a bit of uproar there in the last two days. I've also been a faithful AC and *A flyer achieving AC top level for the last seven years. And far exceeding it the last three. Now that I have moved to HK, CX just seems so much better. I'm cancelling an LX ticket booked in J today to switch to BA or AY so I can accumulate miles on MPC. DM here I come!
When (actually if, I love it here) I move back to Vancouver I will likely stick with CX and fly AC as little as possible.
Service for me on int'l AC flights in J has been quite acceptable but CX really goes the extra mile and you notice a big difference when you are in Y for sure.