Answer: -I don't know how rates compare, but I use "Beautone". -I have used these people: http://www.outofthedark.com.au/ Although their specialty is gaden lighting, James is a qualified plumber and i found his work very good and his prices reasonable. -http://www.masterplumbers.com/plumbfree/Thornton.html They are located in bentleigh east. I have called this mob a few times, they are Always quick and freindly. They do a great job and the bill has been affordable. (not expensive)