FWIW, about a year ago, I finally got serious about cables. I’m a mid-fi guy who basks in the wide range of knowledge in forums like this…but I’m not compelled to chase listening perfection at the cost of running a string of polo ponies LOL.
Because of my other life-long interests in radio broadcasting, recording and large venue live production, I decided to look for the place where pro audio and home audio crossed. Digging around on-line, I stumbled into a gaggle of smallish companies that serve the recording industry and live music productions and liked what I found.
Long story short (I know, too late :) these shops sell monitor level cable and IC stuff in a variety of configurations and lengths at about 10-15% of the cost of home audio vendors! Digging deeper, the weapons of choice for wires were clearly Mogami and Canare. Soooo, in answer to your question, I’m a happy camper being “half in” on this idea. My total cable investment is under $400 inclusive, using various Mogami products for speaker cable and most ICs…and one longish Canare coax digital spec IC from an unpowered analog pre-amp switch to my amp.
I follow the good advice here about avoiding side by side parallel runs and crossing high current cables at right angles, etc as possible. I agree with the logic shared here that there is no “unified brand magic” - but using an allied industry for guidance on connectivity quality, my sound is noticeably better for small dollars.