The local shaper idea is a good one, it sounds like you're not too far from the northern beaches so there's a lot to choose from.
I saw a very good long boarder I've known for a long time this afternoon on a new board, he was really going well, it was from a local shaper, his boards are called DB (I think). I know he has a shop somewhere at the Pitwater road end of Mitchell road.
Another option is Soul Surf Design up in Mona Vale, I was at his shop on Sunday and he was taking delivery of about 10 second hand boards that he was selling on consignment. They were all really good brands, no knockoffs, taks, Beckhams, MacTs, etcetera.
He's also got a lot of his own new boards in stock, tell him Hugo sent you