I second everyone else, Pretorias all the way.
I had Diamond Cut Austin wheels on my GTI PP and although they looked great they do scratch real easy and the black does get dull after time. If you do get Diamond Cut wheel I would suggest covering them in GTechniq C5 Wheel Armour straight away on the day of pick up from the fore court. This will keep your wheels looking great for a long time.
The Pretorias are much easier to clean and far more durable to the elements and brake dust... But then that may also be partly due to the C5 Wheel Armour I put on them as well.