AA.
I flew BA for the first time a couple months back, LHR-DXB with new F suites going down and old F coming back. New F suites looked prettier than AA, but came up lacking (Window seat) as sleeping position was very restrictive in the leg area. If you are under 6 ' this may be less of an issue. The way the LCD TV closes, the one for the seat behind you closes into the wall area right next to your head, so it is very loud when the person behind you stows their TV. FWIW, the 2 middle F seats had much more leg room in the sleep position.