I am not Australian, but I flew on the Sydney to Perth flight on Ansett a few years ago. My itinerary provided by my travel agent said it was to be a B767, but it turned out to be an A320, my first. It was VH-HYG. They showed a movie, and headsets were free.
I'm actually from Melbourne, but used to be a FA with Ansett until last year. Ansett is well known for it's wonderful buffet service served on Perth runs in the business class cabin [used to be served in first class which no longer exists domestically].