I purchased my White's M6 3 weeks ago to replace my Prizm III. I was finding coins within an hour of opening the box and putting the batteries in. I have hunted parks, beaches, playgrounds, fields, and wet beach sand, my M6 never disapoints the M6 finds it all. I recently hunted an old sea dock that was being torn down, there was lots of iron and steel, I set the ground balance and discrimanted out the iron and steel and started detecting. 15 minutes into my hunt I got a loud strong signal (VDI of 89 at 6 inches) I dug down and got to six inches and I pulled out my Bulleye Pinpointer to give me an exact location. What I saw smilling up at me from the bottom of the hole was an 1909 German Drie mark in excellent condition. I had to take a break after finding this beautiful coin. I love my M6.... Thank you White's for making the best detectors out there!