Hey i just got and used 3M's Plastic Cleaner and thier Plastic Polish and its awesome. Its better than maguires by far! Just make sure you get them in differant bottles, it brought the bling back to my 2k Maxima headlamp assembly after 80000 miles!

 

I have used Plexus on all my motorcycle plastics and it seems to work wonders as well. Also, helps cover the scratches.