My Craigslist Whites DFX purchase happened successfully......... I brought it home, stock 950 coil and original 1.0 software with two battery packs, $250.  After making the mistake of turning it on in my backyard using preset Coin and Jewelry mode and listening to R2D2 have a heated conversation with me I almost called up the guy that sold it to me in order to return it. Then I had a momentous, cogent revelation and remembered that the DFX is simultaneous multi frequency, so I figured out how to