Boys and Girls,
Polished my pride and joy using a PC7424 last weekend.
Black = swirls so used Prima Swirl and then a glaze over the top before the carnauba treatment. Found it a lot quicker to do the whole car, although it still needed some elbow grease to remove the excess once the applications had dried. Perhaps a polishing bonnet is required?
Excellent results, although, after reading other posts, I think I may need to put on a couple more layers of carnauba for it to last.
For everybody's reference I got the PC through JonW440 who often posts on the LOC. He has his own company now called Deco Car Care and was very helpful - apologies for not thanking you sooner Jon, apart from time constraints due to the 3 month old child we have a hosepipe ban and, almost, a drought order here thanks to Thames Water loosing a third of their water supply each day through leaks (that's 894 million litres every day!). This makes washing the car a VERY economical task.
My only complaint - a potential RSI injury from the PC vibrations, otherwise an awesome tool for the avid detailer, especially one with no spare time.