First afternoon hunt with my Gold Bug DP at my favorite old homesite gets an 1869 Shield nickel, a personal best for me and the second coin I have ever found here. This home burnt back in the 20's so it has tons of iron nail trash which is why I wanted to try the GB DP. It has lived up to what I've read being good in iron. Especially being able to run quiet when you disc out nails. It rarely gets a high tone response or skip on a rusty nail allowing you to cover more ground. I was digging everything above iron and depth was excellent, also sensitivety to smaller items was good. I also hunted an old school house and found the nickel where my other machines suffer from EMI but the GB had almost no problem with it. The GB is easy to use and you feel confident with it quickly.