for finding gold rings and jewelry. Does the multifrequency make an incremental difference or a major difference? A buddy of mine seems to think that the Cz3D will leave the G2 way behind. I'm not hunting wet salt sand but mainly parks/ballfields and "dry sand" beaches. I tried a CZ5 once and found that the sweep speed seemed very slow . Also I felt that while I used it ( only for 2 days) I dug an immense amount of deep rusted nails. One dealer I spoke with said that he believed, that the CZ3d only discrminated to a certain depth.... and after that it was all metal detection only........hence it's love for rusted metal .It was in his opinion just like the old Compass Relic Magnums...deep but shallow ID effectiveness. Any truth to these theories? I'd like to hear from detectorists that have used both of these. Should I maybe sell my G2? And go to a CZ3d? I picked the G2 because of light weight and a numerical scale versus just a few broad categoties on the target ID. I felt it was a good trade off.....even though the G2 was single tone only. Advice ...comments..opinions...most welcome. Thanks.