Flying overnight LAX to LHR in a few weeks. Based on digging, it seems that AA typically flies the 777-200ER with the Collins config *most* of the time. In case we end up on a Zodiac layout, I'd prefer to sit facing forward, and it seems if our primary concern is getting a good night's sleep, there might be concerns with some of the seats being attached / rocking? Which remaining seats would you pick?