I was in the exact same situation a year ago. Being bent over by Toyota. I was recommended to Metro Motors in Gaffney st Coburg. Could not be happier. Great work. Realistic prices. If they moved to Adelade, I think i would follow them. Be careful......
Guest 4wd is expensive, no doubt about it. But it absolutely reflects in the quality of work and service you get.
their knowledge not only about 4x4s but also about 4wding in every corner of Australia is just priceless.
I go solo to the most remote places (CSR, etc) and stuff like the Simpson is just a Sunday cruise for me. Being able to say to your mechanic "I am going to do xyz solo, not towing" and they tell you exactly what you need to do/change on your rig to have a trouble free trip is just worth every dollar. Other than tyre punctures, I did not have any issues on any trips in the last 10 years since the crew at Guest is looking after my trucks.
if you are just after basic oil change/check brakes I am sure you will find other good and more economical options. If you are going real out bush, I nowadays don't leave before my car got a good look over at Guest.