Hey Grant
treat yourself to some polish from Zaino.
www.zaino.caThis is kick ass polish that builds up the more coats you apply.
I am up to 9 coats on the Talon, and the difference is appreciable.
It will make your S4 look super slick and shiny, just in time for you to sell it, and get this:
http://www.autoblog.com/photos/mtm-audi-s5-gt-supercharged/826442/