I have used one briefly but I know a guy who has been hunting coins for some time now with the XS, he is very good at it. He has told me and to some extent shown that, the factory pre-set is very good. He hasn't been able to find better settings for what he searches, $ australian coins. Silver is a little higher in conductivity than these coins, but you should find that factory pre-set is still very good for silver as well. I would work off of the factory pre-settings for a while until you get comfortable enought to experiment with other settings.