Congrats on a very nice ring and the dig it all approach. I've tried a couple of times but sometimes I think there's a buried schoolbus under the signal lol
This one I would have because it was bouncing from foil to 18 nickel and seemed to have a nice smooth sound to it .When using the M6 I have found 18 and 20 to ( way more often than not ) to be nickels . I am terribly guilty of normally passing up zinc signals if there are an abundance of targets around .