DAA Automatic Brass Marker
Not the most straightforward unit, lots of ways to adjust, but once you get it dialed in, it works perfectly *most* of the time. In a box of 100, I get red and black stripes in the right place and the right orientation 97 or 98 times. Always end up with 2 or 3 that end up not flipping properly, or not seating against the rim before getting striped. However, I will note that ever since getting this unit, I've gotten 100% of my brass back every match that I've shot with it.
I do wish the unit was a bit more "finished" with the motor unit permanently wired to some sort of power jack, rather than having to properly orientate two push on connectors each time. That way, I could also use a less bulky power supply instead of the one that covers other sockets on my power strip.
Either way, it sure beats marking brass by hand!