LJ Hooker Westmead - Neil Toft and Wendy Dale are fantastic. I've been with them since 2005 and can't speak highly enough of them. Used them as PMs for our Sydney-based IPs and they also sold a property for us (after the first viewing and at list price!)
I definitely don't recommend my current Property Manager.
I had a really good PM with one of the big names in Parramatta (biggest?) but she left to have a baby or two about 18 months ago and hasn't returned yet.
The one who replaced her is hopeless and annoying to talk to. I continually need to go over her head.
She's botched up a minor reno and I'll definitely change as soon as it gets fixed up.
I'm on the lookout for an intelligent property manager in the area, too.