Hey, I have a BH Tracker IV myself... it
will pick up silver, as thus far I've found a silver 1954-D dime, a .925 silver pattern necklace, and a .925 silver pinkie ring. I've yet to find any gold, though that may be operator error

as gold tones the same as nickel, and nickel doesn't pick up well in disc mode. I usually run my machine in disc or tone mode if the area is trashy and all metal if it's a quiet area. I've also found modern bullets, older shotgun slugs, metal toys, crotal bells, an axe head, and a number of wheat cents, so the machine will find stuff for you, but you have to figure out what you're willing to dig.
My Christmas upgrade will be a Garrett AT Pro, moreso for the waterproof capability than anything else, although my one MDing friend swears by it. He recently found a 1784 Spanish dollar with it, and I can't wait to get mine for the improved discrimination technology. But you have to remember that iron is not always junk! Iron is the composition for most relics, along with bronze.
Good luck & happy hunting, believe me it's easy to get discouraged when you're hunting an area with little to no results but that's when you change the notch mode and dig more of the signals, no matter how staticky or scratchy they sound (I think this happens because of ferrous ground mineralization).
EDIT: Everyone has their own methods, but one thing I like about my Tracker IV is that I can "bounce" the coil on a signal and if it consistently repeats, it's like pinpointing the object right in the center of the coil. I think that's a product of the analog signal interpretation/output but it works for me!
