Spoiler alert: there isn't any common ‘greatest metal detector for gold’. (Even though the GPZ 7000 is close for anyone of you who can afford to pay for a detector that’s the exact same cost as an automobile). The GPZ 7000 is also extremely convenient to use, even for newbies. https://kisanlink.com/forums/discussion/dairy-cows-cattle/long-distance-detection-with-a-metal-detector