Along the lines of 429cj's post, I can give you my opinions of the schools I've flown at if it helps any:
Bankstown. .Sydney Aerobatic School - quality instruction and the Robin is good trainer, whether you're into aeros or not. Not as 'flashy' as some schools but very thorough and professional. Did a short course there that put my PPL training (at another school) to shame. A bit on the expensive side but you get what you pay for.
Camden. .Airborne Aviation - Good fleet with a couple of new C172's amongst others. Very helpful instructors and an overall friendly environment. Good rates as well for some nice aircraft.
Don't know how either of these schools measure up for more advanced licences and ratings cause I'm not there yet.
Best of luck wherever you choose, just have fun along the way.. .l_b