Nice choice. I flew BA to SYD-SIN-LHR on my last trip in F. The product is quite dated, but the service is fantastic. I have yet to try the new F on BA, as I don't believe it has been rolled out on their Long Haul 747 fleet as yet, but I don't need brand spanking all shiney and new. Its the service that makes or breaks it for me, and BA F crew exceed all expectations. For me, it was like being served by the queens personal butler, the way they walk, talk, and anticipating inadvance my every whim....love it....on my last trip, I couldn't decide what to have for my meals, so they gave me "everything" as a degaustation experience.....you will most likely land at T3, so you can use the AA arrivals lounge on level 2 to freshen up and shower before leaving the airport - the lounge supplies everything........enjoy and have fun....