The perceived enemy called ASR has posted quite a few measurements and analysis. They are not the only voice of course, but can be a starting point.
The search function in the ASR forum is quite effective. Type in Shunyata. You'll find lots of hits. You may consider the ASR stance flawed because it comes to the measurements already biased. There is that. But measurements, graphs with lines on them representing actual data (not biased by humans) tell a clear picture. There's nothing of any value to us in audio from Shunyata cables. Save your hard earned money.
ASR is at its best when it advises. I am no fan of the dogmatic attitude expressed on the ASR forum. I quit ASR because of this and asked Amir directly to delete all my posts. He didn't do that but at least my posts were labeled from "Deleted Member". I find there is value in their measurements. This information is scarce elsewhere.

