litronic headlights scratched appearance

Model: 996, Year:2002, Mileage:68000, Type of use:Street use only
I have a 02 996 with the Litronic head lights. I believe they are the bi-xenon. When turn them on the low beams start out at low light level and brighten to full intensity. When I kick on the hi beams the whole road is easly seen. These appear to be from the factory not a post sale install. The issue I have with them is the lenses while still very clear have many tiny scratchs. I noticed at a restaurant the other night when the car was pulled up by the valet how poorly they looked compared to newer cars. I have seen many different kits and reviews for cloudy head light repair kits. I had one person recommend a kit with about 6 grades of wet sand paper from 500-3000. Another suggested the 3M kit but use the one with the protectant in it. With a replacement assembly around 3k I don't want to screw these up trying to fix them. Your experienced answers would be appreciated.