I set up on Commercial row at Camp Perry every year. When Hornady came out wth this cleaner, they had them at Sinclair's building, and were selling them. I brought in 200rds of .223 brass, that was once fired. No real dirty ones, but in need of a little polishing. We split them up, and put around 100rds in my old Lyman tumbler, with new untreated corn media, and the rest in their sonic cleaner. After 2-3 hrs of tumbling/sonic, we compared. Both lots looked identical, except mine was dry and ready to load. Theirs needed to be dried out. As far as I'm concerned, it's 6 of one, and a half dozen of another. I will not get one, just because I have a tumbler, but, if your just starting out, and it floats your boat, get on. Either one, I can garuntee, will work better, if you change the media/liquid every so often. I run into shooters that just don't want to spend $3-$5 on new media, and then complain that they tumble for 2 days, and their brass doesn't come out clean. gypsyman