I flew AA Y LHR-MIA on one of their older 772s and I had a fine flight. Configuration was 2-5-2. Beer ran out after the first meal service (which was a nice pasta with a fresh salad and a nice wholemeal roll), but AA have a good selection of soft drinks. Crew were friendly, but a little casual.

I'm not sure what eastbound TATL Y is like as on the return I was in J on a77W.