Finally got around to polishing the old, fogged up lenses on my 2005 ride with a 3M kit from amazon.  But I didn't want to go to all that trouble and just conclude after using their rubbing compound (which made a big difference after the 3000 grit polishing stage).  So after researching for some sort of final polish that would also protect the lens, I decided meguiar's was probably the amazon crowd favorite upon reading a bunch of reviews.