Was using a DEUS, but want a detector for ponds. Got a nox 800. Love it. But now I just bought GPX 5000 with a 15 x 12 Detech Butterfly Coil for beach and coin hunting in the woods. Always used different aftermarket coils on my other gold detectors years ago. But WOW. Can't believe how nice this coil is. Pinpoints spot on also.