Fly American Airlines via Dallas. As long as you book decently far in advance a ticket in J is HKD20-25k round trip ( currently HKD21.5k if booked more than a month in advance) and you earn aprox 22k Asia Miles per roundtrip although it may be better to join the American frequent flyer program if you are going to purchase 10 of these trips. The seat in J is exactly the same as the CX J seat and the food is much better (gobsmackingly so!) The overall flight time is about 5-6 hours longer but the flatbed makes this bearable plus there is a break in Dallas. A mattress and Pyjamas are given to J passengers which does not happen on CX. Also there is no extremely annoying mid-flight lights-on meal service. The mid flight snack is done in the dark (decent beef sliders were served on my last flight) With the other meals being served after takeoff and just before landing. Bar the shorter flight time I can’t think of any benefit to flying CX on this route especially at four times the price of a J ticket.

If you do decide to book this flight make sure your flight from DFW to NYC has a different flight number to the HKG-DFW otherwise you will only earn miles for HKG-NYC direct, ignoring the DFW stop. (costing aprox 4k miles)