But you have to realize they are not perfect. Masking, ground conditions, electrical interference can all affect the reliability of meters but they do give you extra information with which to make your "dig or no dig" decision. Water hunters and relic hunters dig everthing above iron so a meter doesnt really buy them any additional informtion. But there is some very valuable information you can use that you can only get with a meter. In addition to target ID, target depth is one nice feature. Also, there are some metered machines that will read how bad the soil is and display for you in relative numbers so you can tell how mineralized your hunting conditions are. You can also assign numerical referece to ground balancing now, nowing how positive or how negative you need to set you machine to work well in a specific location. But again, not everybody needs all of this information. So it really boils down to the classic, use what works best for you and your conditions and the types of things you hunt for. On certain sites I am all in favor of knowing as much as I can about the conditions I am hunting in and I take my detecting time very serious so I like to know as much about a target as I can before digging. Other places, a beep-and-dig machine is my machine of choice. It just depends on the conditions. But that said, you can turn your metered machine into a "beep-and'dig" machine really easily: dont look at the screen. That may sound funny but you really should be digging your targets based on the sound quality first. Its a much more reliable piece of information.