For the OP, you should be happy with the Lyman Twin, if you go that route.Mine has been going since the early nineties and the last couple years I've been running the SS pins in it(ya it's pins in a vibratory unit,tumblers not neccessary). It's going as strong now as it was back then.
As for the to clean or not to clean question. Oh ,I already said what I like. No particular reason or need, just like shinny things.