Ok, no depth differences, but the ID of little hammered silver coins is very, very low. Starts from 7-8 ID. I understand that it is not possible to distinguish it from the little piece of foil... but is low. I was trying to work with stabilizer features switched on - value about 7 in dense iron but with enhanced audio it amplifies target audio... that is not bad but I'm not sure yet, I need more time to test it.