Ask HN Down Under: Best Universities for AI/Machine Learning in Aus/NZ?

I'm looking into returning to study after many years working, and I'm interested in studying AI/ML at postgrad level. Any recommendations for universities with a good specialisation in this field? The ones I'm aware of are Monash and Melbourne Uni which seem to have a lot of AI activity, and Waikato which has a large ML group developing Weka. Does anyone here have experience with any of these programs or recommendations for others? Thanks! Edit: to emphasise that I'm interested in postgrad study.