Hi Doug,
Before this turns into a shit fight, which unfortunately alot of these things tend to, I'll say that there are a number of good tuners in WA.
My personal preferences are:
Ant Scali at Xspeed (Power FC, MOTEC, MicroTech etc.)
Lumpy at HyperDrive - SAUWA Sponsor (Power FC, Autronic, LumpyROMS etc)
Cheers
Paul