I;s had a Frankford Arsenal steel pin tumbler set for several years and added the magnet to the package when I bought it (a good idea when you have to pick up steel pins).
My media tumbler crapped out after 23,000 cases and I am now up to over 44,000 hand loads.

A spritz of Dawn dishwashing detergent and a bit of Lemi-shine Appliance Cleaner with water for about an hour will yield shiny brass with the inside and primer pockets clean.
Stainless steel pins don't need cleaning and they don't rust (at least they haven't rusted yet).
I have cleaned over 20,000 cases in both rifle and pistol calibers with it and wouldn't go back to using a media tumbler.