I recently upgraded my metal detector to a Minelab E-Trac. I discovered that I enjoy finding silver coins and was having a difficult time finding them with my Fisher F5. I went out with a new friend and he found two silver quarters and a dime to my none. Before digging on two of the quarters he let me see how strong the signals were with my F5. I barely had any signal at all and would have most likely past them by. I then went home and ordered a new E-Trac.