I have a Priority Pass which gets me access to lounges in most airports also, so that's not a necessary perk.

My primary reason for switching is I've grown tired of AC's mean old FAs in J class, and the crap around their FFP. What I want from benefit is the upgrades on purchased economy for the family vacations TATL, or ability to reasonably redeem for business class TATL.

The big hole in my plan, of course, is what to do with domestic longhaul (ie YYZ-YYC/YVR). Seems like AC remains my only option with J, though I'd fly WS if I could credit their points to OW.

My thought had been CX vs. BA, but seems like AA may be worth considering.