For analog audio at that short of a length, with only 4 cables (even if bundled), and in a home environment, I would not worry at all about % shield or whether it's braided copper shield or mylar/foil with drain wire, etc. There are more important parameters. 50% shield would be fine and sound the same. Hell, no shield like Vovox cables would work just fine. Remember that the tigher/higher coverage the shield, the more the capacitance. So it's a balance between shielding or capacitance.
I would not spend extra money on star-quads or Ameri-quads either, which has significantly more capacitance (both conductor-to-conductor and conductor-to-shield) than your good old twisted pair. I only use star-quads for rental/staging/live sound where cables are repeatedly coiled, uncoiled, and abused.
What I look for in good, cheap cable XLR/mic cable:
1) 20-24AWG pure stranded copper inner conductors. The bigger the conductors (lower gauge), the more capacitance, but also easier to solder if making own cable.
2) High quality connectors by Neutrik, REAN, AMP, Switchcraft. I want robust, solid connectors that does not wiggle in their shell, with pin 1 positioned properly (makes contact before pins 2/3.) I like the gold-plated Neutriks. Avoid connectors that have a screw to hold it together (with exception of Switchcraft.)
3) Avoid the really shiny PVC jacket material which do not lie flat, has higher capacitance, and over many years can increase oxidation of the outermost copper strands. When I make my own cables that does not have to withstand the rigors of live stage use (repeated coiling and connection), I'll just use the common install-type 20/2 or 22/2 mylar foil/OAS shielded plenum cables. Cheap, easy to work with, and the teflon insulation/jacket has less capacitance than PVC.
4) Soldered by someone who knows how to solder. Open up the connectors on both ends and inspect the soldering job. Should be clean. I've seen atrocious soldering job on Parts Express Talon XLRs.
I've had absolutely no problem with these, and I probably go through a thousand each year doing installation. Made in USA.
https://www.fullcompass.com/prod/218537-cable-up-mic-xx-3-3-ft-xlr-microphone-cable