Thanks again, everyone, for your input! It does seem like the AA folks are really happy with their airline. I still think that it'd make sense for me to go the UA/NW route instead of AA at this point because of the already comped PremEx & the fact that there are always a hell of a lot of promos out of DC on UA for bonus miles.

Also another thing that I just realized, with the pre-comp to PremEx til 2007, I figure if I fly 50K EQMs this year on UA, then I'll hit UA1K - which, if I do that, I may consider having UA as my primary carrier for 2007. Unfortunately, I already booked my SEA trip on DL - however, I'll book the SJC trip on UA.