I learned something today. I found a deep silver dime with the CTX.I exchanged machines with the T2 classic, sharpshooter coil.At my original settings, it would not recognize the target.After cranking the sensitivity up to 95, it just give a loud snap noise after cranking the sensitivity up to hit it.I was using 3 tones, 95 sensitivity, disc 40. The T2 was still calm at 95 sens setting. I went to 1 tone from 3 and it gave a signal tone and ID ? Does one tone run deeper than multi tones ? Maybe less to process since there is only one tone. That smaller Nel sharp shooter coil can hit a 9"+ deep merc dime if certain settings are selected.