Polish blowers look cool. Satin blowers are not. The fact is if the owner went thru the trouble of polishing his blower, the chances are much higher that everything else in his engine compartment will look clean and orderly. If you are going for the look, why oh why, would you not want to not make it look as clean and appealing as possible. It would be like comparing a dull bumper to a nice rechromed bumper. I will look at the car with a rechromed bumper and say "nice!" in my head, and then look at the next car with a dull bumper and "wonder???" in my head.