You may want to give BA a try if you are planning on making more transatlantic flights. While the economy seats and IFE may be similar, I think you will find a much better level of service on BA.

In the past I flew AA and DL until I tried BA. Now, BA gets all my business. Two years ago I was flying in economy. Now I use points and status to fly in First and Club World's flat bed seats. Be careful, BA can be addictive.