I agree with Crosby, there is a certain "size" and "coherency" I listen for when pinpointing those things, and as with any detector Ive used, you learn with time, what those sounds are like. Yes I look for good numbers also, and some lock on, with bounce as opposed to total scatter like as with can slaw. When deep there may be no confidence bars, or maybe one. And you know like the two silver halves I got in several locations as well as silver quarters, the confidence bars light up on the left as well as all the iron bars on the right. So whats up with that? I usually take an interest in the number 80 or better. I dont like when im getting a low bounce to 75, sometimes Im thinking, thats a memorial penny. I dont think i miss many dimes cause they either lock 69-72 or if not deep, real high numbers and very excited. Zincs if very shallow will ring out, but I use a three tone and notch out the zincs and they usually clunk in the mid tone, with some high number although I dont ignore the mid 50's to mid 60s in the mid tones as some Indian heads come in there. Most of my deep wheaties, 8-10 inches show very good numbers and good clean sounds. Lately Im focusing, as a friend who uses a non vid machine recommended, on the "length" of the sound as you swing- the penny and dime may be as intense but the penny is "longer". The dime will be a shorter blip. Thats what I like about the 75 ltd, yes it magnifies the picture (and I dont just mean decibel wise). If it didnt, it would be harder to distinguish the length of the dime and penny. Its like one of the copying devices with two pencils and you trace over the original, and while doing that the other pencil creates a bigger image, its not just darker ink, its a bigger magnified image. Sorry Im getting carried away, but does anybody know what I mean? CO