I appreciate your reply and I too would like to kiss the inventor of that PRO coil full on the mouth because it is a thing of absolute beauty. The reason I stopped using IM 27 and conduct tones on my SE is because the iron would false too often high tone and stop me dead to investigate nothing. In many of these areas where the grandstand rotted into the ground nails included, my SE would null out for 30 or more seconds at a time with any coil larger than a SR 8, problem was I still needed to get about 6-8 inches depth in the disturbed, air entrenched crop soil, with 3 inch of corn stalk stubs. The ONLY way I could hunt it was with a larger coil, in all metal or the nulls would cover and mask out everything. On the SE's, the audio is faster than the smart screen and in ferrous tones the high tone you hear is silver and at that very moment; the smart screen has yet to update. Try it right now with yours and you will see what I mean, go in all metal, swing a coin pass the coil and you will hear it before you see the smartfind screen update. In iron that dense, I couldn't wait for the screen to update, bounce or whatever, I am getting as many as 10 iron hits a swing. If I waited to see a bouncing cursor first, I wouldn't never get to see it and second if I was looking at the screen I would have missed seeing and remembering the 4 square inch spot the coil was over when I got the tone. Heck, my screen just bloody hangs up useless in that situation because it is too much information for the SE processor to display in such a short time frame, the screen does not update as fast as the tones do. That's the true purpose of all metal, because you can separate even better by uninterrupted tones. If your sweep speed is 4 seconds to a full 6 foot coil sweep your coil is moving 1 and 1/2 feet per second. If a null lasts for 1/2 second: that's 3/4 of a foot of ground you just missed. If in that same sweep it nulls over 3 nails, that's 1 1/2 seconds or 2 1/4 feet of ground that was not detected (signals not reported), more than a third of your entire swing and also a third of your signals you will never hear' good or bad. If you don't hear it, you don't know you missed it. Once you see it for yourself you will never go back to IM 27 again, I can't.