If you go polish, give a nice coat of wax.
I've used wax on just about every surface on my car with great results, includig the polished lip on my wheels. The bulk of the dirt will just fall off and not stick when hit with a little bit of water.
Powdercoating is nice too. Had my upper and lower intakes, valve "front" valve cover, CAI piping, license plate frame, etc and it still looks good. When the car wouldn't start after a "vandal" cut a wire for me, the cops couldn't believe that the car had 128,000 miles on the engine and that is was the orginal engine. You cannot wax a "wrinkeled" powdercoat finish
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33% ALEROMOD OWNER!!
2000 Olds Alero 3400 SFI 14.53 @ 94.93
1985 Olds Delta 88 307 SBO 17.96 @ 76.99
2007 Volvo V50 T5 6M 15.782 @ 89.12
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