For machining, buckles, gutter rash etc: Dean at Depulu in Ashmore
For refinishing, painting and polishing: Dean at Mag Wheel Services in Southport.
I have personally used both these guys on more than one occasion and they are great at what they do. I absolutely swear by these guys!
I also take my wheels to Depulu for balancing, although they don't really do this as a service, they're the only place that seem to be able to get it right and are usually happy to do a balance only job. Also its noteworthy that these guys never use rattle guns.
-rb25