I am always on the look out for easy to use metal polish. I've tried them all- from the cheapest to the most expensive, and have never been happy with the amount of work involved.
I am rather lazy, but on my sailboat I have a lot of brass etc to polish. At the latest boat show, I came across this stuff. It is AMAZING. Polished up the stuff on the boat in no time so I decided to use it on the Ruff Speedlines. In only 10 minutes they looked like new!
Just do not polish painted center caps with it, the paint will come off. (I have no financial affiliation).
Their web site is:
http://www.mppros.com/