Etihad airways now flies to 3 Australian cities, including Melbourne and Sydney, Australia.
Why not search flight review sites like
www.airfaresflights.com.au/airline-reviews/Etihad_Airways
http://www.carsurvey.org/air/airline_Etihad+Airways.html
If they continue expanding you better sit tight, as going off my personal experience they are an absolute disaster with over 24 hours delay alone, rude staff, broken inflight entertainment systems and so on... BEWARE !!!