Found these items one afternoon in a park where they play alot of soccer. I used the 8" Excelerator coil. CJ Mode,trigger in center,auto ground balanced locked. I have found also that the MXT is a killer on nickles. Using the 8" Excelerator coil if the target has a vdi reading 14-18 from all angles and not above it will be a nickle 90% of the time. Both of these rings which are 14k gold had a VDI reading of 14 and locked on at that reading. The ground here in southen california is very mineralized and the execlerator coil is smoothe as butter compared to some of the other coils I have tried.