@jafox
You raise some great points. I look at cables a little differently to most. I assume all cables degrade the sound, and therefore when I assess cables I am looking for the cable that does the least damage - least damage in terms of transparency, noise floor, coherency. I see too many people using cables as a bandaid to a system issue - check the forums "looking for a cable with good bass..." or other criteria.
With regard to phono cables it gets a little bit interesting because there is no one size fits all. Electrically the tonearm cable is part of a tuned system that includes the cartridge and the receiving device - be it phono stage, moving coil set up ( transformer or other active mc step up ). Therefore unless everyone has the same cartridge/phono, experiences and opinions will vary, as they do.
I note that neither Audioquet or Stealth provide any electrical specifications for their phono cables - no capacitance figures, no data on phase shifts at varying frequencies etc etc.
So for most folk phono cables are a lottery - suck it and see. And in many situations I have seen folk come to grief because they have a cable bandaid, they upgrade their system and the cable bandaid doesn't work with the new gear.
For my own system I use 2 phono cables depending on cartridge.
For MM's I use a custom Audioplan phono cable - silver, twisted pair, shielded ultra low capacitance. This was a manufacturers sample never released to public - too expensive.
For MC's ( which is what I primarily listen to ) I use either MIT Oracle phono or some custom cables I have built myself using MIT Varilay wire as a builtin block from the 80's. They are very capacitive which is why they don't work with MM's.
I have a lot in the bin - Ikeda, Audio Tekne, Audioquest and many others in the parts bin. Most of these do too much damage. I have not heard the Hyperphono, the Audioquest Leopard is average, not particularly transparent, low level detail goes awol in my experience.
Finally we have to remember that listening preferences vary considerably from person to person, some folk want a nice smooth sound, some want zero noise, some want "fast zippy sound" - when I had an audio shop I heard it all.
My advice for any cable purchaser is audition in your own system, listen for musical coherence, low noise floor and transparency - do not focus on a specific attribute - and do not believe any reviews, use them as guides only.