It depends which part of the Ditch.
For SYD-AKL and MEL-AKL, there is a reasonable choice.
For SYD-WLG, there is only QF and NZ. I did four SYD-WLG-SYD returns last year. Despite a preference for NZ (to credit to UA scheme), I had to mostly take QF because of schedules.
All other routes are leisure dominated and even thinner.