Your favorite OCC speaker cable

Audio Sensibility out of Toronto and Audio Envy in Fort Collins, Co.  Both internet direct. Also Wireworld Equinox.

I have been partial to HT Pro 9+ or 11+ both of which are made from multiple strands of solid core OCC copper that is individually insulated in foamed PE then surrounded by various layers of (probably superfluous) damping material, PVC, and tech flex that makes them look big and manly (probably a design selection by the marketing department).
For whatever reason I like the HT sound better than stranded OCC offerings by folks such as Furutech and also better than the similar AZ cables I have owned such as their double barrel shotgun cables.  I like the depth, fullness, and power of the bass from the HT cables as well as the clarity and rich tone across the mid-upper frequencies.  I am currently running two pair of HT Pro 9+ (aggregate of 6 awg) to each speaker.

TARA Labs Muse works great for me.

HarmTech is very nice - warm and also detailed, really good at taming "digititus".
I recently auditioned occ copper ribbons from ZenWave. They are my #1 now for my tube amp w/Harbeths.

I'm a big fan of OCC. In the past two decades I've owned Harmonic Tech Pro-9, AZ Satori, AZ Hologram II, and, currently, Audio Sensibility Signature. The AS Sig is by far the best of them, IMO. I auditioned some Audio Envy cables a year ago but found them too weighted toward the mids.