A deceased friend gave me two metal detectors a few years back. The first is a White's IDX Pro (Black Max 950 coil). The second is a White's Prizm V (Prizm 950 coil). Both are approximately 15-20 years old. I would like to keep the better of the two detectors and sell the other one. I have never used either of them but would like to start searching once spring arrives. Any thoughts would be appreciated.