Flash,
I recommend avoiding Brasso because of the ammonia. Check the
Wikipedia entry on Season Cracking. Annealing mitigates it, but I don't know how many reloads you can get before the stress builds to the point that you must anneal the neck again to prevent it? I usually anneal once every third, fourth or fifth cycle, depending on the brass, but if I had ammonia exposure, I would expect it to need to be done more frequently. Ammonia and brass under stretching stress (from the seated bullet) are not a good combination, it seems.
There really is no need for ammonia cleaners. You can buy a can of white buffing compound at the auto parts store and dilute it in mineral spirits or denatured alcohol to distribute it in the corncob.
The fastest commercial stuff intended for the purpose is the Lyman green polish. More than twice as fast as red rouge when new. The other brands I've found to be inbetween somewhere.
Like an earlier poster, I've have the smaller 1200 since before the fancy separator bowls, but upgraded the bowls later. I removed the grill on the bottom to improve air flow and often set it on top of an upside down piece of medium pile carpet scrap. The bottom of the scrap is firm enough not to block air flow, while the pile dampens sound transmission to the floor. It works a little more slowly in this configuration, but doesn't irritate the spouse.
On/off switch? I got one of those 12 hour fan timer switches from Lowe's and put it in a box and use it to tell the tumbler when to stop. 2 hours for new media, 4 hours for old.