I am probably alone in this, but I actually like taking CX 889 doing JFK-YVR-HKG (I know this sounds like a nightmare to almost everyone else). The flight departs JFK at around 10 pm and arrives in Hong Kong at 6 am.
But I'd eat and relax + enjoy F for the first 5-hour segment, stretch out a bit during the break, and then for the 13-hour YVR-HKG segment, have a more "formal" dinner, sleep for 8 hours, wake up for breakfast, and arrive in Hong Kong ready to roll. I also find that personally my jet lag is greatly helped with this combo.
Solid advice actually. CX888/889 are not for me, but it sounds like something the OP is looking for. Kinda best of both worlds thing.