JL. Top F by a long, long way (unless you won’t eat excellent Japanese food). Lounge at Haneda okay but at Narita it’s poor. In the air it’s the world’s best.

Second, CX, just generally good.

BA, solid product with various deficiencies but over all great. LHR Concorde Room is a top lounge. Other F lounges can be vary between awful and excellent.

MH, but I don’t understand their classes now. When I flew there was a good F in the air and lounge but they have muddled their cabin classes for some reason.

QR, umm! The most fabulous lounge in Doha of all airlines but on board it’s no better than J. Even most of the food is exactly the same. Caviar does creep in as do better wines but I would not pay extra for QR F over J.

No experience with AA.