What he said. I've got them all and stainless is way the best. I did recently learn a new trick from my nephew. It turns out that the smaller 3 pound drums will do a load in about half the time as my big 15 pound drum - so I now have both.
Thanks for the response, stainless media sounds good but out of my price range. I ended up buying a Berry's tumbler because I heard it was quiet and good. So far it is living up to my expectations.