I found myself tring to choose the best from a pair of Chord Rumour 2's and a set of Effems chunky copper wires called Lyric.
My normal setup is with the Rumour (silver plated copper) in single wire run, using Chord Odesey jumpers to connect the twin terminals on my speakers.
Comparing the Krystal Kables to the Chord, I found more bass wiith the Krystal Cable but a duller top end, as opposed to a brighter top with less bass detail anddepth with the Chord.
The next test was to biwire using theRumour for the tweeter and the Krystal Lyric for the bass. Low and behold I now have the best of both worlds, and I am sure having two types of wire makes a difference opve just straight biwiring using the same cable for both high and low frequencies.