[Mickey Rat]

I have used liquid, but tumbling is better to me (I'm lazy). I also think tumbling removes more severe crud. It even removes the annealing discoloration.

I just picked up some cases that had melted plastic on them. They cleaned up in my tumbler. I didn't really think they would, but they shined up.

I size/deprime first, followed by tumbling to clean. It gets the spray on case lube (I said I was lazy) off and makes them look great.