A
Anonymous
Guest
From using different models from the CZ6 thru the CZ70 pro never found much difference in depth..I do feel over the years they have improved the iron nail thing.Keep in mind one may have a hot CZ and those that have older ones that feel they are not as deep a tuneup at Fisher may be in order..Hard to believe still many original CZ6 units still going strong after 13 years...Surely debateable but coil for coil hard to beat a CZ for depth no matter what unit you use. In addendum your local mineralization and operator expertise can certainly vary depths obtained.