I am taking a long hard look at the MXT, and M-6 for relic hunting. Have been in the hobby for 32 years, but never used a Whites. Nautilus and Tesoro have been my detectors over the years. Now I see more and more relic hunters in this area using Whites machines (Coastal S.C.) Would I be taking a step down depthwise by switching to the MXT, M6 from the Tesoro Tejon? I have also considered the Pro XL and the Blue & Gray as a used detector purchase. I would assume that the DFX is probably the better relic detector but it's out of my price range. Thanks