Originally Posted by radiowell

If you are in J, take the nonstop for a simple reason - more sleep time! NRT-LAX flights are often 9 hours or less, gate to gate.

https://flightaware.com/live/flight/UAL33

Of course, this is reverse, but the same argument applies.

Originally Posted by dvs7310

If you need the additional PQMs then NH would be my choice. If you don't really need them then OZ. I agree, I'd go for the A380 over the 777 if the time works for you.

Originally Posted by LAX/HKG

Agree with others if the time works for you OZ on the A380 is the best option.

If miles is not too important then OZ on the 777, otherwise NH. I personally prefer NH's hard and soft products, but OZ's is pretty decent.

Unless your company requires you to fly on an US based airline UA should be your last option.