I only had a rego inspection, but found them to very professional. They knew what they were talking about, turned the car around quickly. Even cleaned it for the same price I have had other inspections done (who didn't clean it). Give them a go.
We had an odd problem with the transmission in our car that the local Saab dealer couldn't fix (but they charged a lot to take a look and spray the car with their deodorant). The guys at Balmain Automotive took a couple of goes to find and solve it, but they got there and they didn't charge us the times they couldn't fix it. We're definitely going back to these guys.