Some are die hard sound only hunters, and of course the rest of us use the sound first and as the only real final answer on whether to dig or not, but the VDI can split hairs on say zinc pennies, indian heads, or other stuff versus say a copper penny, clad dime, or on up from there. All coins above copper penny are 180 on the meter, but it's the stuff below that the very high (highest VDI I know of on any machine) stuff that you can really split hairs on with a meter. Deadly for say ring hunting by avoiding specific tab numbers in an area and digging all nearby and other numbers. Also great for nickles, as they read a certain number below pull tabs and such. Yes, most of us love a meter, but for the purist who only hunts by sound there is NO better machine than the Sovereign. Other machines have as many different tones as the Sovereign for the conductivity range to judge by, but none of them that I'm aware of have the long drawn out rich "music" of this machine that can tell you a lot about a target. Warm, round sounding, soft, or just a "quality" smooth sound to it? Chances are it's a round object like a ring, coin, or old button. Harshy, scratchy, hollow, bangy, warbly, tinny, or so on? Then it's probably trash, and especially oddly shaped trash will have some funky/iffy sounds to it. This is a digital machine, thus the many tone alerts, but it has a long drawn out analog like quality to it that so many hunt-by-sound hunters of yesterday loved on analog machines. The best of both worlds. All the other digital machines I've ever owned or used, including the more expensive ones from our favorite company, have more short, processed, and sanitized audio than the Sovereign. It's one of it's biggest strengths.