Hi,
regarding the AT Gold detector.
I was at the July Goanna Muster about a fortnight ago & the AT Gold was demonstrated. A small piece of gold about 1mm square, was place on a small house tile & this was then placed on top of some moderately mineralised soil in the middle of the Stuart Town common which was one of the biggest gold mining areas of NSW in Australia.
Using the ALL METAL mode, the coil was waved across the top of the tile (about 1"above it) & the AT Gold screamed. There was no doubt at all about the detector picking up the gold. Just to prove it, the gold was removed & nothing was detected. The gold was replaced & once again - a very loud & clear signal. (The AT Pro running the 4" sniper coil had very similar results but the AT Gold was the best)
The surprising thing was when the BIG BIG - MOST EXPENSIVE detectors were fired up at the same target. Not a whimper was heard from them when they were waived across the target at any setting.
However, the AT Gold was struggling when a 2.2gram nuggett was burried about 8 inches down in that type of soil. Naturally the big detectors had no problems with that nuggett.
I trust this has been of some help.
PS: If you really was to try the AT out, try taking it & one of the oppositions big $6000 detectors snorkelling @ the 10ft underwater level & see who finds the gold!