Copper, silver, or gold MC cartridge coils?

Don : Do you think that these kind of music lovers/audiophiles buy or bought their cartridges because the cartridge coil wire type/kind?, no way almost no one decides on a cartruige thinking on that specific characteristic because it's just unimportant against the whole cartridge design.

@slaw  obviously as you said it's not a reference debate because there is no true reference about. We are just audiophiles not cartridge designers that are the ones that probably have something to say but I'm not sure they could have a debate about because  ( again ) the whole desig/sum of the parts is the really important ( what it counts. ) main issue.

R.

I had a gold wired cartridge, a Clearaudio DaVinci. I thought the Ortofon Windfeld Ti was a better cartridge. But I could not say it was because of the wire. Do the metals really sound different? They all work harden but I think copper does this easier than the others. I tried searching for the answer. This would mean copper wires that are being vibrated will break sooner. The other metals may be more durable. I have had two cartridges that fractured copper wires, a Denon D103 and a Sumiko Talisman S. They were decades old when they did it. Both with copper wires. 
There is a slight difference in conduction but will that effect AC at audio frequencies? I can't find that answer. The wire runs are not very long either. You would have to compare and measure three identical cartridges just with the different wires. To my knowledge nobody has ever done this.
Schroder offers his tonearms with either copper or silver wiring. I chose the copper. The tonearm wires are scary fine. They look like they would snap if you sneezed on them. 

The key is not the wire in the cartridge but how the cartridge reacts with your arm, table, and phono stage. You want to pick the best cartridge for your system and that can be a challenge but a big reward when the magic happens. You also want to play your choices for at least 6 album sides because low output moving coils take a long time to relax.

The closest I got to comparing coil materials in a more or less level playing field was hearing three different vdHul Colibri’s in the same arm (Reed 3P 12" Cocobolo) in immediate succession: XCP (copper coils, plastic body) XGW (gold coils, wood body) and XPW (platinum coils, wood body). As far as I know there never was a Colibri with silver coils.

In my system I had a clear preference for the platinum coil version (a limited series and no longer made). It struck a nice balance between the fast, dynamic, punchy sound of the copper version and the smoother, more refined presentation of the gold coils, while adding a superior 3D stage neither of the others could match.

Disclaimer: the Colibri as a breed are known to be temperamental and the word goes they all sound different. So a similar comparison with three different samples might yield a different outcome!

BTW: this comparison was done prior to the introduction of the current Stradivarius and Signature versions. These new systems may have very different characteristics and be more consistent than the previous series.

I have a Airy 3 Gold, silver base to mount, after my Airy 3 Silver, silver base, goes sour (which is soon, after 3 years of use).

Also have a Airy 3 copper, silver base that has 1.5 years of use.

I have two identical VPI JMW 10 arm wands on my TNT 3 that I use.

I will post my opinion later on the gold coil ZYX.