Honestly, the only thing SS media gives you over tumbling without it is clean primer pockets. The outsides of the cases get just a shiny and polished from rubbing against each other without any media. I only use the rotary tumbler for applications where peening of the case mouths isn't an issue. Stuff like pistol cases and rifle cases that go in loose factory chambers. In those applications, dirty primer pockets don't matter and the time spend de-priming the brass prior to tumbling and separating the media afterwards is a waste, IMO.