The Clearaudio MC's use gold coils and they are excellent cartridges. The Da Vinci V2 is the sweet spot in the line. Very detailed and dynamic cartridge for a moving coil. IMHO the Charisma is the most dynamic cartridge they make but it is MM. It is very detailed but the overall presentation is a little darker than their MC cartridges.
I have no opinion on Zyx cartridges. Never used one.
I have no opinion on Zyx cartridges. Never used one.