I agree guys...although black looks the nuts, its definitely a bitch to keep clean! However, I've found a good formula to getting rid of those swirl marks and keeping my baby clean and shiny!
First, use black colour restoring wax from Turtle Wax as a first coat, then do a second coat using AutoGlym Polish! I know it sounds like hard work, but the results are excellent!! It makes the black paint work look really rich and good as new, with a real mirror finish!!
Give it a try!
Cheers - Neil