I have both and use both. I take my fired brass and put it in the sonic for thirty minutes and let them dry overnight upside down in the plastic trays from the cartridge boxes. The next day they go in the vibratory tumbler for between 6 and 16 hours which depends on the corncob. If the media is at least fairly new 6 to 8 hours if it's been well used longer. I find that when the cases start coming out very dusty it's time to change the media. I take the dusty brass and roll it on an old towel. Then it's on to the sizing die. That's my process anyways.
---------- Post added at 05:22 AM ---------- Previous post was at 05:21 AM ----------
Oh and I find that running them through the sonic first makes the media last a lot longer.