Hi...
Just to add my two cents worth...
I have recently started using about a tablespoon of Lemi-shine and a couple of squirts of Dawn to about a gallon of boiling water to wash dirty brass. Just enough water to cover the dirty brass in a plastic container. I stir it enough to get the dishwashing liquid and Lemi-shine well mixed and then stir it about every five minutes or so. It works very well to clean brass and remove tarnish from brass that has gotten wet. I discovered this method of cleaning brass after a large water leak in my reloading room left several thousand brass cases submerged in water. This method leaves a pinkish hue on the brass where it was tarnished.
After cleaning and drying the brass, I run it through a tumbler with corn cob media for roughly two hours. This completely removes the pinkish hue on the tarnished brass and shines it to like new condition.
I like shiny brass.
FWIW, I do not usually de-cap my brass before washing and tumbling it. I like to de-cap and re-size and then clean the primer pockets on my RCBS Case Mate prep center. I just enjoy doing it that way which is one of the reasons I do not care for using a progressive press.