Hi Monte , in the video the person is using the Garrett grand master hunter cx . It has the two discrimination control knobs on the side of the case . Would that allow him have a better adjustment on discriminating out the nails and hitting the target as compared to the cx111 being all computerized ? I have a 6x9 dd coil for my cx111 . Just need to get a nail board to test . I’m just curious and not making or trying to compare any brands . I was searching the internet to see if I could find a Garrett grand master hunter cx but one or two that I found where kind of expensive. Surprised that so few are for sale being that quite a few were sold back in their day .