To clarify, in the last paragraph of my previous post I was referring to "wire", not the brand StraightWire. I meant to say that all wire has many effects and artifacts beyond resistance, capacitance and inductance. Most of those spurious artifacts exhibit in the time domain with frequency related phase shifts and distortions.
That said, the brand StraightWire was Thiel's long term wire source. My summer of 1978 was spent researching wire, which led to the ITT aerospace 18/2 twisted in teflon and same-source coil wire. As time went by, that technology and non-military market was transferred to another Florida company, and StraightWire became their distributor. Thiel became StraightWire's customer sometime in the mid 80s. One of the partners spun off to form WireWorld and Thiel sometimes used their cable products at shows along with various other brands. But the industrial wire from the factory continued to be supplied to a broad market by StraightWire. The wire I got from Rob earlier this year was that same StraightWire. The wire in the Chinese Thiel crossovers looks the same, but I have no way to verify its particulars.