I'm still learning the 2500.I've found that it hits nickels pretty hard,in my soil.I'm begining to be able to distinguish the difference in nickels and pulltabs by the quality of the sound.I have some hearing loss,too many years of shooting big bores with no hearing protection.I still dig all nickel signals though.My nickel count per hunt has gone way up,especially war nickels.I have hunted with my neighbors the last 2 hunts and they are amazed at the number of nickels I find.They aren't using a Garrett detector.