I hunted a spot that I havn't been to for a couple of years thinking it was all dryed up. I took the F75 with the small coil to a part of the park I have hunted the least. It is loaded with hot rocks and junk. I have avoided this spot with the other detectors I have used and thought the 75 would have problems here, but I was wrong. In a short time I dug 31 coins which included two silver dimes, three wheats, and a silver ring. I usually run the sens at 75 with the small coil, but I had it turned down to 50. One of the silver dimes was 7 inches deep and it was a good signal. I run the disc at 5 and and listen to all signals. Here is a question. When the disc is at 5, the detector is in a high gain mode. When I have a disc of 5, what happens to the sensitivity? Does the 5 disc setting over ride the sensitivity setting I have? I have always been confused on this situation. Anyways, the small coil is a terrific setup. I am finally getting use to the numbers and how foil and tabs react. I have been using 3h tone mode and I am digging tons of nickles. If I get a high tone with numbers from 31 to 34, it is a tab most of the time. If I get a high tone that is 27 to 30 it is a nickle. Not quite as good as the CZ's, but close and with more time, maybe equal. What is better than a Cz is the tremendous recovery speed in trash. I am finding coins as deep as any detector I have ever had and with the trash handling, it is the total package!