whats the best polish for a black car

i have been using Xtreme solutions stage 4 carnauba on my black jetta. the first day it is great it hides the swirl marks from the previous moron owner, but the secodn day its worn off and they all come back. i have buffed the car as best i can with out gettin it re-sprayed...but i was wondering who makes the best lasting polish wit a built in swirl remover

I only use Zaino (http://www.zainostore.com)

this stuff works good - http://www.topoftheline.com/tolae/32ozmidswirr.html

i use Zaino too, lasts very long. Use their swirl and wax products if you want to best.