Another good example for my list of reasons not to tumble my brass. lol
I guess some of us like things being shiney and some of us just don't care.
I do on occaission use a mild Scotch Brite pad, but not on all and not very often.
But I do really like my RCBS case prep machine for cleaning the primer pockets and inside of the necks.
It will also deburr the necks after trimming, which are other jobs I hate doing.