Looking at booking flights for 4 adults and 1 infant to Chicago for early December. Both airlines have direct flights with suitable departure / arrivals times and AA are €22 cheaper ( 438 V 460 per adult). We've flown transatlantic several times with Aer Lingus but never AA. Not unduly concerned about the slight price difference but would AA be of a similar standard or better perhaps ?. Any advice on your experiences welcome.