I bought a used Minelab X-50, Had just a little time to play after work. Went over the back yard (again) knowing this would be about the fourth time, I didn't expect to find much. And I didn't find anything big, That's the point I'm making I found a piece of a brass zipper at about 5" it was maybe 1/4" x 1/4 " 1/8 thick. What surprised me is I always got erratic signal in this area ,TV cable runs thru here.The other detectors would never give a solid or even consistent signal . The minelab had a solid 18 -21 vdi at 6" deep. Pinpoint was dead on, Depth was within a inch or so. So now I'm going to go back over places I've done before, Who knows I might find that bucket of gold and retire.....At least that's the dream