as I said we used to use the billet polish till we ran out and was only able to get ( find) the mag& aluminum one...the billet polish is MORE consistent in its making, and used for 'other' metals as well, thus more costly..........with polishing stailess, beng so hard, it is more in the 'cleaning properties' that we like it......have used F;itz & semichrome for years, and the guys at the bike shops, (and many of them gun owners) turned me onto the Mothers years ago, and thats what we use,yes, in a pinch if the 'other' stuff is on the work bench, and its nothing "special" we'll used, byt I think ,feel those are more aggressive ( abrasive) and prefer the final polish with the Mothers & a Microfiber clothe.........
use what YOU like and works for YOU, and 'newbies' stay away from ANY and ALL power tools, hand held or bench mounted...........
by hand, it really does work..........