I've been using a RCBS for a little over 3 years and my brass comes out spotless. A little Nu-Finish(around 2 capfuls) every other time I use it is all it takes. I can't remember the last time I chaged the media and I usually do 100 cases at a time, some times twice a week (winter). I leave the spent primers in so the flash hole and primer hole do not get plugged up. Wipe them off send through universal drimer then lube and size,file trim and then off to the case prep(rcbs), put in primers then into ammo boxes ready to go all set for reloading.
I shoot all summer & fall with out reloading so I end up with a lot to do during the winter including my winter shooting.