LINK
Here's a 41pg thread from SniperHide on Stainless Steel Media. Suasponte (Terry) is very helpful if you have questions. I swiped the photos from that thread.
My recipe is Thumblers Tumbler Model B. I got mine from Cabelas. It's a faster tumbler than some others. They sell it for around $180.
I ordered my stainless media from Mark (per Peregrino's post).
I use a shot of Dawn dish detergent and a 9mm case full of LemiShine (you can find it at Target or Walmart in the dish detergent section).
Fill about half full of brass maybe a little more then usually around a gallon of water. It should be near the top. Media is already in the tumbler. Put the top on and let it run for about 3 hrs.
I got a Frankfort Arsenal media separator. I fill that bucket with water (which keep the media from flinging out when you spin the thing. Also get a good magnet (I pulled one out of an old hard drive) so you can pick up any media that falls on the floor.
I dry it under a work light in my garage and it looks like it's brand new. Even brass that sat in the weather for years looks good.
Like Peregrino's post, it takes a little longer but it does wonders to brass. Plus the media never wears out.