Silver crazy, this is a difficult question to answer is print. That's because it is basically asking something to the effect "what does such & such sound like?" Those are questions that can't be answered in printed text. They have to be heard. Like trying to describe the note of C-minor in print, can't be done. It has to be heard.
I too entered into long dialogues on emails, and over the phone with Explorer pro's, and yet ....... each time I entered the field, everything sounded the same: Like a flock of sick geese

Yet I knew (had seen first-hand) guys pulling deeeeep silver that my humble Whites could not even hear (no matter how I set it over flagged signals, no matter how I swung, etc...). So I kept on stubbornly trying. But it wasn't till one of these pro's actually flagged a few marked deep suspected targets (deep silver or wheats at 7", 8" or more), that the "lights went on"! It wasn't till I heard the tooty-fluty (by using a headphone splitter), and watched the way they swung (to see what tones they were trying to isolate), that it all started to make sense.
So try to hook up with someone who is proficient. Ie.: not just a sandbox hunter, but someone who routinely comes in with the old coins, from worked out spots. See if they'll flag a few signals, BOTH GOOD AND BAD. For the bad ones, have them explain why they would or wouldn't chase them, etc.... By cross-comparing, only then can you get the tone idiosyncracies.