http://Mashdetectors.com is testing these 2 detectors out on a large 5.4 oz gold nugget buried at 18", which is the depth it was found at with the GPX 5000.
See more of the Garrett ATX here: http://mashdetectors.com/mashdetectors/garrett_atx.html
And see the MInelab GPX 5000 here: http://mashdetectors.com/store/minelab-gpx-5000-metal-detector/
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