Here is something cool I find for the archives:thumbsup::
http://www.youtube.com/watch?v=kBTXr4vy3Ag
With that said, what is the comparison with aftermarket light output? The polished headlights look better than before, but they are still old plastic. The 7 gen used headlight market primarily consists of 13 to 17 year old headlights of which a large portion have oxidized and become very brittle due to being stored in direct sunlight outside. My point is that plastic does not stand up to sun, wind and rain for very long. BTW, my aftermarkets don't leak (yet), the ironic thing is that my supervisors 2002 Ford Focus lights do.:naughty:
So I guess to redirect the OP, if you have cloudy lights, then yes shine them up to make it cheap and easy. If on the otherhand you were like me and hated the output and appearance even after light polishing, then I would go aftermarket and get some silicone to supplement them.