I live in upstate NY around Rochester, I've tried detecting the grounds of my 1850's circa cobblestone....its like it was built on a old town dump site....the first detector I bought for the place was an Etrac, I tried for two years even with the smallest coil made for it and every program that was suggested but the nulling and slow recovery speed was just too much for me....don't get me wrong the Etrac is a fine detector for the less trashier places I visited, I found some really deep silver with that baby but you have to go real slow which actually doesn't match my personality ( I like to swing fast and cover as much ground as possible, I'm very impatient : ( )....I sold the etrac and bought a garret at pro(mainly do to its faster recovery speed), I'm managing to separate the trash from the good signals a bit more often but you need to be in pro mode...the pro makes a good bit of chatter but you really have to learn this detector by ear....the good tones are really going to be mixed in with the bad ones and once again I must state that this machine loves to talk in pro mode even with iron disc up to 40, you really need a good ear ,the visual ID meter is not the greatest on this machine but the tones are excellent...If I was in a less trashy area I would have kept the etrac but the parks up here are mostly pretty bad and I can't afford two machines