Air New Zealand
Flew with ANZ two years ago LON/HKG/AKL/SFO/-LAX/LHR
I like their business seats. As a bed they are genuinely flat. You get a duvet. The seat is pretty flexible. I didn't like the fact that it's difficult to see out a window.
On board they were friendly and the food was really quite good. I only drink soft drinks on board.
The Star Alliance lounge in T1 isn't amazingly inspiring but it's OK. I can't remember the one in HKG; make of that what you will.