I've read quite a bit of bashing about the Ace on this subject (on the Minelab forum). While it is true that you can get quite a bit of *pinball machine* noise in mineralized sand, I've now spent enough time in wet sand to realize that you have to ignore single, jangly "dings" and concentrate on the nickel-pulltab stronger, consistent signals. I'm finding targets, you just have to have a discriminating ear.