I have had two jet black bmw's and they are pain to keep clean... don't get me wrong, they look absolutely superb when clean and still good when dirty, but my god it is pain to look at all those swirl marks which you will get so easily. Metallic is much more easier to your blood pressure
No more non metallic for me... or maybe I will try my luck with white
http://www.e90post.com/forums/showthread.php?t=104346