Got permission to hunt an old abandoned home, probably built in the 1930's. Just as I expected it was filled with trash, I decided to use the 6.5 concentric on my LTD but will take the 5" DD back next time. The 6.5 did well, I found a dozen or so clad, a 55 wheat, a 59 nickel and the lone rosie was a 64. I took my 83 year old dad and 30 year old daughter and they were not use to that much trash so I spent most of my time looking at their targets and digging for my dad, since he can't bend very good. I love them both but I will have to go back without them and take all my coils and see which one is the best in that much trash. The dime really looks good just couldn't get a good focus on it.