Well i use the PC, (porter cable) as probably most do on here. I tend to use the Intensive polish on the sonus yellow bad, as this has more 'bite' for swirl marks etc. One i've done that, i follow up with Final finish on a sonus white pad. Gives fantastic results on black, which is probably the hardest colour to get defect free.
Search for PC guides etc on here, should bring up some useful threads.