How about some tips on the CZ6a detector? I have read others (Mike's Page) but am beginning to think that all CZs have their own little quirks. I would really like to know where nickels fall on your CZ. Mine seem to favor the nickel/foil bounce. Percentage wise how often does your detector say "Nickel" and it is a nickel? Also , is it possible to distinguish a quarter high tone from a penny/dime high tone? Differences?? Thanks for answering