I've been using a couple of CZ's a 70 and a 3D.Didn't like the 3D so I traded it in on a M-6.I really am addicted to coin hunting and I thought this might be a fun coinshooter.I'll get a small coil for it soon.Found a 1918 Walking Liberty Half,2 Rosies,2 old nickels and 4 wheaties at a new spot this afternoon.I haven't even scratched the surface of all there is to detect at this spot.Can hardly wait to use the M-6 there.I downloaded the manual and read it several times.I'll post on how the "get acquainted" sessions with the M-6 go.Bill