Lyman Cyclone Rotary Tumbler.
I'll let you all in on a secret. I've spared no expense on my tumbling stuff. I have the dry and wet rotary tumblers. I've used walnut, corn cob, metal polish, mineral spirits...etc for the dry tumbler. I've used dawn and Lemi-shine in my wet tumbler with and without stainless steel pins... works okay.
There is literally not anything that is faster or works better than Brass Juice. By far the fastest and cleans the brass without use of any stainless steel media. I used the same gallon of mixture I originally mixed to clean over 5 loads of brass (about 600 223 cases) and they were literally spotless and shining more than new. Then I didn't have to separate media. Just put them on my Lyman brass dryer and I'm done.