Got the 17" for Xmas and it was off to the pounded park ball field. With the 11" I had found over 30 wheats, 2 Indians, a handful of dimes, and 3 silver quarters. After 2 hours with the 17" I managed to find a v nickel that I got lucky on and one wheat. The V was in with a handful of iron nails that gave a repeatable signal. I never heard or saw a nickel tone. Overall, I'm not too impressed for the price. Does anyone have any special settings they run specifically for the 17"? I may have too many numbers discriminated out since readings become more varied at further depths. Thanks