Just an FYI that BJC now carries the new 12G '4K' Series by Belden:
Apart from the jacket lettering, externally these cables look just like the 6G versions, but internally they've been re-engineered for 12G. This has meant going to silver-plated copper center conductors, for improved attenuation; bonded foil, for tighter control of impedance; and reconfigured shield braids to prevent the shield from creating return loss issues.https://www.bluejeanscable.com/store/sdi-cables/index.htm
Sounds like an affordable opportunity that should satisfy both audiophile and, er, Blue Jeans Cable fans. Personally I intend to get the 4694R version and use it for my internet coaxial cable. And just as a reminder you can also get really affordable pure silver only digital coax, the Audioquest VSD-5, here:https://www.ebay.com/itm/Audioquest-VSD-5-Bulk-Cable-By-The-Foot-NEW/360085175381?hash=item53d6bfbc55:g:QfEAAMXQskFRHrdU
Of course, that doesn't have the same kind of credibility - specs, measurements, et al - as BJC.
Lastly, I've been messing around with a tweak (which I won't go into at this forum) that involves ethernet cables. I ended up cutting open a number of cheap Ethernet Cat7 cables off Amazon and I gotta say, some of them are poorly made. I mean, terrible. One exception was the Amazon brand:https://www.amazon.com/AmazonBasics-Network-Ethernet-Patch-Cable/dp/B013PUMQYY/ref=sr_1_1?ie=UTF8&qid=1526337129&sr=8-1&keywords=amazon+cat7
The jacket is thick, the internals revealed high quality copper mesh braid, a high quality foil underneath, and then individually wrapped twisted pairs beneath that. All tightly wrapped. Screamed quality. The look and construction reminded me of a certain company. Then I remembered Blue Jeans Cable is also based in Seattle...