Thats what I was saying. Any machine will find you something (granted you know how to use it). A coin at a depth of 6" will only be found by one brand of detector? I figure each has some drawbacks. Was it the Etrac that has a picture of what is in the ground before you dig? I would like that one. To reiterate, it is knowing the machine. My MD I had just got a month ago. I tried it inside where it was warm. It doesnt like thin gold necklaces more than 3" away. Idr exactly, but using two different coins together it would yeild a completely different reading. Like a dime and a penny read as a nickle (or something to that effect). Yet content of individual coins made no difference. A silver quarter or new quarter both read as quarters. Too bad you can't try before you buy.