Not read through all the pages but I am involved in a discussion elsewhere. I thought I would share a few things from that

1. Ethernet Cable Testing - AQ Vodka

2.AQ Vodka Stripped Down

Its not very dissimilar from a standard Cat 7 cable.

The results are being collated atm

861v4 LPSU, HD621, Bryston 9BSST
KEF Reference 3 and 2c, 2 X SVS SB13 ULTRA
Audio PC: JPLay, LPSU, JCAT, PPA Studio
Cables XLO Limited, Unlimited Edition and Signature
Sony VW500 Isotek Titan, DIY Mains and Clean Signal Earth Solution