My favourite when travelling is Aer Lingus, really top notch cabin staff who always seem to be friendly and chatty. And that goes for the ground staff as well.
You could do alot worse then going Aer Lingus transatlantic, US System now with JFK, EWR, BOS, ORD and LAX and soon to be BWI. You also get the bonus of clearing US immigration at DUB or SNN which is convenient to say the least when it means you avoid the inevitable scrum at passport control at JFK!!!
And no I don't work nor have ever worked for the "Flying Shamrock"