Guess I didn't really understand prospecting mode before. I've gone into that mode to help pinpoint deep targets, but haven't used it to hunt with. Today I was playing around in the test garden out back and I noticed that prospecting mode will give back different tonal qualities on different targets. My question is, how good is this tonal difference? I know its one tone, but like the Tesoros it seems this can give back different qualities in that one tone. Can you learn to tell the difference between the tone iron gives off, versus non-ferrous? If so, then I don't need to bring along my Tesoro to get max depth in all metal and the X-terra will give better depth with the 10.5 MF DD than my MXT ever did with the stock coil.