We have just had a solar system fitted. In my opinion there are 3 major components of a solar system and of course the fitters. I spent endless nights researching these products and found that MC Solar and their products rated well. If anything they under sell their racking system which I found superiorly manufactured compared to other brands, the system fits snug to the contours to our colour bond roof, it's not just a bit of right angle.
I have had nothing but trouble with contractors coming to my house, with trees falling onto my roof, abusing my wife and doing more damage than the issue itself, I found MC Solar to be approachable with my barrage of questions in particular Bruce Daxbury and the fit out guys were polite and helpful to my wife who was home for the installation, making the effort to install the system where she wanted it (not just the easiest place), explaining how to use the system and offering advice.
I would recommend MC Solar.