Yes, let me try to clarify my question. I purchased my M6 back in March of this year. My first detector. I had my heart set on a Prizm V, but when I actually got to (find a dealer) see the V vs. the M6 and the DFX he had on his floor, I could tell the latter two were head and shoulders above the V. Since i could not afford the DFX I settled for the M6. I have been extremely happy with this machine, finding nearly $200 in clad and silver jewelry this year. For the first 6 or so months of the year I discriminated everything out but coins. Soon I stopped digging pennies and focused on dimes and quarters. Of course when you search for that you will automatically get silver.
We've had a drought here in NC and I've had to dig with a screwdriver since May, it works great, it's much faster than the Lesche type tool I was using, but it is difficult to remove targets deeper than 5". Also as a rookie, I thought that faint tones were not good target tones. Bottom line is, I haven't been digging faint tones, with low VDI's. It now sounds to me as that is what gold would register with my detector. Air tests of my 14K wedding ring register around +20 and +22. I have also started panning for gold at the local recreational gold mines here in NC. I have found about 1/2 gram of flour gold. When I air test my vial of gold, my detector does not beep at all, and registers a negative reading in the Iron range. From what the prospectors around here tell me, what is left in the NC mines are not nugget mines but rather placer flour gold areas. I understand from panning from gold how you have to get down to the black sand to get to the gold. This sounds like what the Prospecting mode of the MXT helps you to do. Possibly the MXT finds the magnetic black sand, and is sensitive enough to emit tones for flour gold. Maybe not though, maybe like my M6, it will only emit a tone of nugget size gold like my wedding ring.
Finally, on the issue of me hoping the MXT would find gold jewelry better than the M6. Simply put, I think of good targets emitting good solid tones. If my M6 sets off a weak, faint signal when it encounters gold, my hope was that a Prospecting mode of a detector would somehow adjust to emit a good solid tone such as a high silver target, if you were looking for gold. That was the crux of my question.
Thanks again for the input, sorry for my confusion. I need to field test an MXT as maybe one day this would be my logical next step. For now, I will crank my discrimination down to the 1st factory pre-set (nickel), listen for the faintest of tones, and dig everything.