Alain and JCR .. since in the last few days I have been detecting a couple of times from the Atrex with a small 12cm concentric coil and .. from the VERSA with a 23DD coil, so I will be able to describe my observations from the detection as well as write something about the sound profiles of the VERSA.. ...as for 2D and 3D separation tests and practical detection ... it should look something like this ... like with Atrex ... "3D separation test"..A very small 14mm-0.5gram hammered coin