I am glad i traded in my old detector for an etrac at first i wasnt sure if it would make a difference but after some time learning the machine its paying off with a lot of firsts including a seated quarter ,a standing liberty, three v nickels a shield nickel and a franklin half i cant explain it but somehow the fbs system can see better than other detectors in trashy areas and still run stable in iron although those deep rusty square nails still fool me once in a while im catching on to the ways to tell the difference ive dug more good targets with trash in the same hole then i ever did before