boabab:
BA is the same as all other oneworld airlines -- that is, oneworld lounge access is free, but only for the top two tiers of their frequent flyer program. For the lowest members, oneworld lounges are not accessible.
I concur with kyklin -- CP's is probably the best deal. The US$95 price tag makes it a super deal, and the ability to use both AA and CP lounges when flying either gives you access to large number lounges. Finally, lounges in Canada, both AC and CP, but particularly CP, are a lot nicer and have a lot more amenities that typical US lounges. (Check out Vancouver's domestic lounge if you ever have the chance. Beg your way in, if you have to, even if you are not supposedly qualified to enter. Tell them which lounge/airline you are a member of, and ask to compare.)
megamiles:
AC's lounge rules are quite specific -- you must be holding a ticket with and Air Canada flight number to gain access to a Maple Leaf Lounge. They have agreements with a number of lounges in the US and around the world, but not all are UA lounges. For a non or low-elite member, this means that even if you have a Maple Leaf Lounge card and are flying on UA, you will not be allowed into a UA lounge. Elite members with Star Alliance standing may get access, but kyklin was interested in non/low-elites. This is why I think the CP deal is better than AC's. But both AC and CP are worlds above most others, in terms of price and facilities.
Regards,
Ken Hamer
[This message has been edited by KenHamer (edited 04-01-99).]