Look forward to hearing your thoughts on Aer Lingus. I've flown them once on a trip to Dublin and they were fine but I don't think I could do them to continental Europe - the flights from Boston to Dublin are way too short and I can only imagine that the connection onto their all economy class short haul fleet at the crack of dawn makes the trip rather miserable. If you flew on DL/UA/AA, you would have a much longer ride in J on the TATL segment and not have to sit 2.5-3 hours in Y on a 174 seat A320 (for comparisons sake DL only has 150 seats on their A320s - soon going to 160 I believe). I'm guessing that is why Aer Lingus prices so low in business class because you can only fly it to Dublin.