PAD speaker cable differences

As much as I like Purist cables (never heard the Canorus), I do suggest you consider other brands too, something that will sound different or maybe even better with your SET.
There are Purist fans here and Stealth fans. Very generally speaking, Purist should sound fuller with incredible midrange and deep soundstage, and Stealth might be a little more "neutral" and leaner. For SS I will take Purist any day but for tubes especially SET I don't know, I would have to sit a listen for a few hours at least.

RSF, I've been using the Canorus now for about 2 months and initially didn't find it to my liking BUT after over 600 hrs of break-in on a cable cooker I find it amazing! It's quick, transparent, has incredible control and deadly silent. Have never heard the Proteus myself so no comment.

Can somebody describe the differences between the two cables - or even more generally - 3 metal stranded vs solid crystal copper?

I have both Proteus Provectus (speaker cable & ICs between source and preamp) and Canorus (preamp->amp) and didn't know there was a substantial difference in sonics between them.

And since there are aspects of my system sound I would like to tune, I'd probably benefit from understanding the differences, so I'd appreciate any insight.

I have had once a pair of PAD speaker cables (don't remenber which one)
When I replaced it by a pair of JPS Labs Superconductor 3, I had the feeling that a cork had been removed from my ears !...