Funny you mention the Infinium during the crazy California storms last year i was working a beach with a group of guys i had my Apex there was a d2 ,nox and a legend and we were all doing pretty good in the fairly heavy black sand but i noticed nobody was working the top 6 feet of the beach up against a wall .I could see a quarter and nickel sitting on the surface and none of our detectors could hear them,it was just pure black sand it looked like it was spray painted black . I ran back to my truck grabbed my infinium with the double d coil and in a 6by 40 ft strip i got 3 and half gold rings maybe 20 nickels and something like 10 silver coins.The next day a guy brought a gpz and struggled,