I can only really compare CX SQ AC BA and UA.... I know this wont be popular here........ but I do think AC is trying..... Also CX to me is NOT that great... UA does not hold a candle to AC in terms of Food.... [UA's mileage plus program is light years ahead]
I love BA.... the British food service etc. SQ well...... yah light years ahead..
I think AC product will be very good for 2008..... However the Aeroplan program will contine to fail....
The best news is AC is really trying to improve... and the new hub at YYZ is great^ MLL on the US side is wonderful^ Things are looking up!