I flew CX JFK-HKG biz a month ago and aside from few very minor peeves I thoroughly enjoyed it. The seat is flat and comfortable, while herringbone design assures that you don't need to see your neighbor unless you choose to.
Food (Asian) was excellent. Was favourite part was when I woke up in the middle of the flight and asked for a snack and they brought me a bowl of hot noodle soup (excellent!).

Issues were: my seat controls were finicky and didn't always work, they ran out of my first choice entrees (second choice was excellent), and they allowed all Marco Polo members to board at the same time as First Class and Business Class.