Just my 2 cents...even though I love OP and OC, MANY times I have been able to see "micro-gashing" left via PC on black (the abrasive particles used are "relatively large). But it really depends on the paint hardness, pad selection, and pressure applied. Therefore, these are not my favorite polish for finishing on black. A MUCH MUCH safer bet would be to get some of that new
Blackfire Scratch Resistang polish or the
PO106FF...they cost more, but are worth every penny. And if these products are not strong enough to tackle the swirls, Optimum Compound won't do it either - you'll need to go with IP or
DACP (and then follow either of these with Blackfire or PO106FF).
DJTrackie...to answer your question - NOT very good on black, that's for sure!