I agree....There is going to be MUCH more silver left out there that is masked in some way then those deeper clean signals that were still pretty easy to find for me about 5 to 7 years ago. Many of my sites limit silver to about 7 to MAYBE 8" deep, so there are some machines other than the Sovereign that can reach those depths in my soil. Not many, though. Mainly just Minelabs and maybe a handful of other machines that can push 7 to MAYBE 8" in my soil, but still not as deep as Minelabs in my soil. Yet, I've got other sites where conditions are right (better soil or high moisture/flooding) where coins can be much deeper and out of reach to everybody but a Sovereign. In those areas I still look for the super deep clean coin signals, but in areas where coins are limited to 7 to maybe 8" deep I think it's a waste of time anymore looking for clean silver signals at those depths at public sites, or at least the ones I've been hitting for years. Now, at one of my more recent sites I've been hitting over the last two years, we are popping wheats and silvers in the 7 to 8" range with no masking, as obviously this site hasn't been hit hard with a Minelab. But still, when I know the site doesn't have much chance of coins deeper than 7 or perhaps 8", and despite hours of searching I'm not finding any clean coin signals at those depths, then it's time to look for the iffy/masked/on edge/junky/ghostly coin hits and dig those, as that's probably the only silver left at a site like that. Most people won't dig those kinds of signals unless they meet a certain level of being what they consider good enough to be "dig worthy". I only recently found that many of the junky coin signals well below my usual criteria for considering being worth taking a chance on often DO turn out to be coins. I only know because I was hunting a empty old house lot that didn't have much trash, so I was willing to dig even the worst of the worst in terms of coin signals that just hardly would give a high tone here and there and might not even give a 180 on the meter no matter from which angle you swept. But, I could hear the high coin tone in the signal. Just hints of it, and so I dug those targets and more often than not they turned out to be coins.