For the last 40+ years the Model B Thumler's Tumbler served my needs. Can use wet or dry. Only time I wet tumble is when I purchase 308W military range brass. Then it's Lemishine and a dash of Dawn.............one and done. Over the years, I have tried plain corn cob and also green treated stuff. Then plain crushed walnut shells, and also the rouge coated shells. The rouge worked well but gets into all the nooks and crannies of your firearms after years of use. Especially building up in the rims of brass cases. Finally, settled on Lizard Litter (plain crushed walnut shells). I rejuvenate with Iosso, when cleaning takes longer than normal.
Dust isn't a issue with enclosed water tight tumblers. For added protection, place a used dry sheet inside and discard after every batch of brass.
Not a fan of the vibrators. Too noisy and open lids let dust escape. If your worried about the dust and or noise, run them outdoors or in your garage. The vibrators do have a use. I run my Lyman Turbo when I have only small batches to do. I use a full size paper plate, with a centered hole, covering the lid slots. Seems to contain a lot of it and I'm sure the dryer sheets add to that effect.
I usually vacate the shop, when tumbling/vibrating brass. Nothing to reload till brass is clean, anyways. Don't want to listen to the noise, either. I use appliance timers on both units. I have the option to run them outside, if desired. Covered porch is just outside the basement shop door.
I don't worry about lead poising in our hobby. Live long enough, something is going to kill you. I worked for 30+ years in an industrial pipefitting setting. We use to toss asbestos pipe insulation around without regard, when I was an apprentice. Not to mention the constant oil and cutting fluid mist exposure in the auto plants, where I was employed.