Wet Tumblers
Depending on calibers and volume of cases, you may want to look at Frankfort Arsenal Rotary Tumblers (FART) wet tumblers. They make a larger one (I have), and a smaller one. You would want the larger one IF, and only if, you are going to be cleaning 1000+ pistol range brass, or 600+ .223, or hundreds of 308.
I bought mine because I wanted to wet tumble dirty range brass. I still had to de-prime first. They do work VERY WELL, rinsing is a pain if using blue FART juice. Some people say dish detergent and citric acid is easier.
I still have several dry tumblers, and media, and am keeping them for polishing processed brass.