using a DFX or XLT for example.Compare their detector to it and judge it from that.All the while the guy using the xlt or dfx will be running a factory program.Guys like Dan will judge the machine by that.I was runnig one of my customs last year,got a strong hit,even with the coil 4-5" off the ground.Just for the hell of it I loaded up the factory coin program in my DFX.I'm thinking that I would get a fairly strong signal with it and just be wasting my time.I couldn't get the machine to make a peep on the target.I couldn't believe it.It ended up being a thin piece of brass a little smaller in diameter than a quarter.I loved White's and they did NOT drop the ball on the DFX,but they DID drop it on the factory presets on the DFX.Dave