Bought a new CZ21 in March. From the beginning I felt that its depth capabilities were lacking. I had a CZ20 about 5 yrs. ago and I feel its depth was a lot better than the 21. Also the tone ID on a nickel is off. I get a a mid tone one time and the next time I get a high tone like I am supposed to. This is a airtest with a new nickel about 2" from the coil. Setup in Autotune with sens. on 10, I can barely hear a quarter at 10", a nickel is barely heard at 8". This is with the 10 1/2" coil. If anyone has the same setup as me I would like to hear what depth they get on a nickel and quarter. Thanks, Mark