I'm am interested in this now. I love to use my NF 17x11, but not so much lately (it's old and well used, occasionally false signals) and was not so happy they went with 17x13 with this newer coil type. The narrower nose profile gets among rocks better imo, and for where/how i detect.
Will be watching closely, and perhaps trial one against my NF and see if THIS is to be the newer coil in my kit.
Not to take away from the OT, but do CT or NF make an 11" round using the new coil windings? My Commander is red hot, but if there is an 11" i may get 2x new coils.
GGA