This one. When I bought last, it was available at Wal Mart.Maas Metal Polish. A little of this goes a long way and is the best stuff I have come across. It isn't cheap but it is worth the money IMHO.
Amazon product ASIN B0008D7IV8
I agree and should've explained better in my answer above. That's why I feel a soft rag is all that's needed. Generally I'm only concerned with wiping off any oils and such.Im probably in the minority but I generally don't polish my metal bits, I like them to look a bit worn. They get wiped down after play but as far as a cleaning and polish not that often.
Never do this.I use 000 steel wool if the metal is really bad, otherwise I finish it off with a polishing compound like Nev-r-Dull or Mother's. I've been using this combo on the chrome on vintage bicycles, saxophones, guitars, etc. with good results.