4 dimes in ground ,6"--7"----8"--9" at lowest sens nothing in disq turned to 3 oclock got the 6" then to 2 oclockand got the 7"then at 1 oclock was geting a wimper on the 8" then at 12 i was geting a digable signal on the 8" dime but the 9" would null . In all metal i could get them all turned on the auto sens and lost all targets I must have bad ground for it to do that so i went back and found just a bit left of 12 noon i was getting my best clearest signal so i turned the sens up even more and the signals started to break up on the 8" so i turned it up some more and nothing on the 8" and lost the 7"and the 6 was chopy turned it up all the way and lost all signals so it really does matter how you set the sencitivity less can be more and more less so befor you start hunting a spot do some quick in ground testing or you may lose lots of goodies now i can tell you i have owned a M-6 a cebola and they would not get past 5" in this same ground in disq now this GT is getting 8" with a clean and digable signal thats not to bad and if the ground gets to bad the all metal will cut thru it . Now no disq seting got a clear repetable signalson the 9" dime but i got a intermittant sound but in all metal i got it no problem sorry for so many posts Gun the vale