I use one of these about every 200 miles with some extra mops.
http://www.dremel-direct.com/acatalog/Dremel_3000___15_Accessories.htmlPlus autosol/rag to finish off with.
Still looking good and shiny after 2600 miles however matt imperfections in the metal starting to come through so I guess I will have to give up eventually.
My dealer says if I do give up trying to keep them bright don't ever put bandages on. I did'nt ask why but he must have good reason.