Sinacori Agency - any good?

I've just registered myself with Sinacori in Sydney. I had heard they were about as good as PG's which are supposedly excellent. I'd already done some research about agencies, and seeing as i've got no idea when it comes to this kind of thing i was just stumped when i started looking. ok, im all over the place. my question is: is sinacori worth my time and hard earned money? Any reply would be good.