I bought a Compass X-80 when they first came out. I really like the machine, but after using it for about half an hour, it would go nuts, and I had to turn it off for a while. I never got around to having it fixed and ended up selling it, like new, to a friend of a friend who gave me $20.00 down and then moved out of the state with the detector. Last I heard was that he had it repaired and it was working great. I know the first time he tried it out, he found a silver half. I wish I had it back, or at least the money he never paid me.