Brass cleaning is one reloading activity I have the least experience on.
Back when I started reloading (2 or 3 decades ago) as part of my initial kit I bought a Lyman, it’s a 1200 Turbo if I recall correctly, the labels are long gone. It has a screen lid but no drain plug.
It’s always done the job and never gave a reason to “upgrade” it; it just works.
Usually my volumes are a hundred or less of rifle at a time or maybe 300(ish) pistol though I’ve never really counted I just add until it looks full enough.
I use their green media, I believe it’s corn cob.
It’s not quiet but the rhythmic sound isn’t annoying and reminds me not to forget it running overnight.
When I went OCD on high polish for awhile I added a squirt of mag wheel polish (Mothers) that initially clumps but give it some time working it went back to normal and the cases came out like new. I quit doing that though, without it is clean enough.
Edit: FYI if you do this you have to run the tumbler without cases for a spell to work out the clumps, if you put cases in before then it’s a problem…
Super easy to empty, I just use a plastic pan for a hot water tank and tip the running tumbler (by holding the bin) upside down over the pan and give it a shake while it’s running. It doesn’t take long to completely empty the cases of any media. The hot water pan has a hole on the side for a drain hook up which makes reloading the media easy with little to no spillage.
Some dust is created as the media becomes worn but nothing I have ever worried about as it pretty much stays contained.
Dumping the brass on a large towel and giving it a roll/scrub/wipe cleans any residual, takes very little effort in my opinion.
I have an ultrasonic cleaner as well, not a firearm specific cleaner but one for shop use. It works amazingly well for everything I’ve ever put in it but I’ve never cleaned brass with it. The thing is noisy and the noise is irritating, not pleasant at all…
I looked at the wet tumbling when it became the rage but my hurdles were it wasn’t cheap to get set up for it, it really didn’t do anything my existing setup didn’t and mainly takes more dedicated space that I simply don’t have. To learn some experience case damage I’m glad I didn’t take the bait.