Update:
It now looks like the coil will not be with me before the end of Jan - mid Feb. Hopefully, by that time covid restrictions will be lifted to allow travel but my feeling is we will still be...
Been using the GPX (Both 4500 and 5000) regularly since Feb 2012 and detecting more years than I care to remember.
My VLFs are the Nexus MP MK II, Nautilus DMC-IIB & Equinox 800. As well as the GPX pulse induction detectors I also use the Whites TDI Pro.
Interests:
Play Fiddle (badly) and English Concertina (not quite so badly).
Main Detectors:
GPX-5000/4500, Whites TDI Pro, Nexus MP MkII, Nautilus DMC-IIB. All 'deep seekers' and Equinox 800.