Right now, it seems that UA international business class is being diluted by a lower service level. Since you'll be on a lot of those trans-atlantic flights, you'll be better off with AA's MRTC and business class products.

As an Europe-based AAdvantage member, you would also have access to all Admiral's Clubs when you travel. The upgrade policy on AA is a bit more generous, especially on international flights, because you can upgrade with miles on all published fares.

Of course, I could be a little biased.

[This message has been edited by Plato90s (edited 10-30-2001).]