The Cable Company advice?

With that kind of budget and system, my recommendation would be to work with a dealers that carry 2-3 lines of cables and offer risk free trial. Folks at CABLE Co. reminds me of my experience of dealing with a car salesman. You’re far more likely to receive personalized service and expert advice from a specialty dealer than from the ‘Joe Schmoes’ at Cable Company. 

And please stay away from cables with voodoo accessories touted as fine tuning devices. It would be helpful for readers to know rest of your cables, like PC and IC’s. 

Think synergy when it comes to brands and materials—copper vs. silver, for example. Cables are no different than any other component in your system; they need to work in harmony

Example: Ask the average speaker salesperson who sells a variety of high-end speakers what his specific favorite speaker/brand is.  He will more than likely not  let you pin him down to selecting one speaker brand over another, as not to show any bias towards one brand over another.  Happy listening.

lalitk

And please stay away from cables with voodoo accessories touted as fine tuning devices.

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Unless it’s Synergistic Research.  Starting with the Atmosphere UEF Series - or more recent offerings.  The tuning modules are the result of years of R&D.   Yes, they work - quite well.  My system’s SQ is the best ever now that I’ve implemented a full SR loom.    And I've auditioned a lot of different cables over the years.

“My system’s SQ is the best ever now that I’ve implemented a full SR loom”
@steakster 

I am not going to discount your or anyone’s experience, but after trying many cable brands, my takeaway: a straight forward high-purity copper cable often outperforms cables with fancy ‘tuning’ gadgets and exotic metallurgy. We all have our preferences, I prefer cables that don’t color the sound or add anything extra—just a pure, honest signal allowing me to appreciate music at much deeper level.  

@tcbrinkley 

I’ve had good luck with The Cable Co. I’d try them again and see if you get a different rep. My experience has been very positive. I explain what I’m after and what my budget is and the result is 3-5 products in the range I’ve asked for and then I just listen & listen…

Here’s another idea, maybe in parallel, as an experiment. Ask ChatGPT. Write a good prompt including as much detail about your system as you can. See what comes back.