I haven't tried the new Air NZ 777-300ER seats yet, but the old 747-400 business class seats/beds were pretty good.
Add to that the package of: really friendly cabin crew, great NZ wines, a truly remarkable and pleasant experience going in/out Auckland Airport, a reasonably civilized terminal for departures out of LAX (pause for sounds of people fainting at the thought
), and Air NZ business remains my favourite way to go AUS-USA. A very pleasant way to travel.
Cheers
OverRun