That's what I meant to say..TRUE all metal.My whites Classic 3SL which has the black sand switch lowers it to accept true all metal at the lowest setting so it would be like using an all metal mode.I like that feature because it lets me fine tune the line between small iron and small non ferrous metals.It gives me more control in the disc mode and a little more depth.It will let me reject the very small iron and still detect the very small good stuff that a lot detectors pass over with not enough low end rejection in the disc mode.Even at the 6.59KZ with a small coil it still finds tiny jewelry,lead,gold,brass and nickles and I've found tons of bullets with it without having to have a higher frequency. Right now I'm deciding between a MX5 or M6. I DO like the features of the MX5 but I also like the M6. I have always liked real knobs and switches instead of push pads or touch pads. I've always been spoiled by the trigger toggle for mode switching and pinpointing.Very few newer detectors have that anymore.
RonK