Have used it for about 15 hrs now. Tried gobble-gobble's tip of using discriminate for rusted bottle caps and listening for broken signals like the Excal hits. Helped some, but I also got a broken signal on a crusty penny. In supertune it is plenty deep, but on my machine I need nearly maximum sensitivity for acceptable depth. Haven't found anything deeper yet than I would have with my Excal, but I think it may hit a little better on shallow and fresh objects. A shallow and heavy Tungsten ring gave me an overload signal today. Where it shines is in a sanded- in hunt where one may want to go back and forth from dry and wet sand and the water. It is very light with a straight shaft and belt mount setup. I will be hunting in a site where the current is strong, targets are waist to shoulder deep and rusted bottle caps are numerous. I will bring both machines and start with the BHID, but if I am digging too many rusted bottle caps, it will be Excal time.