Keep in mind while reading this that Roger Russell is one of the most prominent names in high-end audio with every reason in the world to capitalize on high end speaker wire, aside from compromising his integrity as a scientist and engineer.

I can find another link with similar responses from Ken Kantor of NHT among many others that don't stand to profit from fancy wires.

"If you are flammable and have legs, you are never blocking a fire exit" -Mitch Hedberg