When I eat at a Chinky,I go to those that know how to do it best and that is in China-Town in Sydney.
The best way around to finding the best is to try out all of the available ones that are located in and around China-Town as it is the best and most fun way and remember,you'll have to go a long way to find a bad one.
The rule is that there are only those that are better than others.
But because you live on the Nth Shore,I recommend you seek out Crows Nest were there is an abundance of Chinese Restaurants.