If you want clean and shiny, I don't think anything works like wet tumbling with SS media. Just as a test because I would never use it but I've taken, literally, the worst nastiest looking range brass that has been laying on the ground outside for years, thrown it in the wet tumbler with SS pins a squirt of Dawn a tiny sprinkle of Lemi Shine let it run for a few hours rinse and you would never believe it was the same brass.
The one thing I've learned, the hard way that is, Lemi Shine is one of those weird products where more is definitely, NOT, better. If your using Lemi Shine and your brass is coming out dull not bright and shiny cut back on the Lemi Shine. I'd have to look at my notes but I think I only use half of a tsp. Also, if you're getting those chalky white water spots on your brass from using tap water like I do using distilled water eliminates that and it's cheap.