went over an area with my Infinium that I had just hit with my Excal and found a women's Platinum wedding band and a lots more clad. There was a fair amount of black sand and a lot of wave action, but I doubt all those targets showed up in 30". Have redetected areas before, but only found a few more clad coins. Of course, I dug bobby pins and nails even if I could pretty much tell that they were trash because they are usually shallow , we are sanded in and target density is weak, so everything comes out.I like the Infinium but the end of swing signals in the water, although bearable with balancing the machine, gets a little tiresome after a couple of hours. Now I hope someone will give an honest review of the new White's PI Dual Field unit. May have to accept the battery compartment design, but if the unit is not a noticeable upgrade over the Infinium I will stick with the Infinium as my PI machine. I am gradually heading over to the PI detectors for wet sand/ water hunting if there is a bearable iron trash population.