warmest speaker cables you've heard?

I also recommend Cardas Golden Cross.

Warmest speaker cables I’ve heard are the 0000 AWG fine-stranded welding cables I use. BTW, also the most neutral cables I’ve ever used. 

That capacitance albeit very very low, is the only characteristic that could possibly affect audio.

This probably one of the most profoundly anti-scientific and outright absurd statements I have ever heard in a while.

There is no scientific model that tells us that everything that could possibly affect sound is currently known … and there never will be.
We have recently discovered that all the matter that we can perceive amounts to less than 10% of the total mass of the matter in the universe. In excess of 90% of the mass of our universe we are unable to observe, and in our absolute ignorance we refer to it as “dark matter” and “dark energy”. We know it exist solely because we can see it affect what we can see. What it is, we do not have the faintest clue.

The idea that your 35 years in electronics makes you knowledgeable of everything that could possibly effect sound is pure fantasy. Your statement should read “That capacitance albeit very very low, is the only characteristic that I know of that will effect sound.”