I have always liked shooting SS Black , stays blacker/deeper IMO ( a little old trick I learned years ago is to add a bit of kandy purple to black makes it seem deeper on a blue sky day, as the blue of the sky is absorbed by the black ) , as when you add clear it seems to look a tad cloudy wether added clear or clear top coated .
Plus it scratched white , not black
Next time your up close to a new black vehicle ( which will be BC/CC ) look around the door handles there will be a bunch of little white scratches from fingernails it will do this on ANY color that is cleared ! white will be the only color that wont show ..LOL