Hi:
If you want to train in Sydney I can recommend the Takemusu Aiki Association. It is headed by Takayasu Sensei, who is Saito Sensei's leading Japanese student who is teaching outside Japan. We train in traditional Iwama style, so the aikido is strong and practical, with a strong emphasis on weapons.
Takayasu Sensei has been teaching in Sydney for about thirty years and a number of his senior students have set up branch dojos with strong links with Sensei's dojo in Surry Hills. There are dojos in Turramurra, Bondi Junction, Camperdown, North Sydney and Randwick, as well as Queensland if you're heading up that way.
The web site link is
http://www.aikidoaus.com.au/dojo/index.htm
Come and have a look, it might be a bit different to what you're used to -- but you might even like it more!
See you on the mat.
Russell