Given the "speed" of your speakers, your response to the Kimber on the upper octaves is not surprising (lack of air in harmonic core of note, energy loaded at the attack transient, etc.). Money doesn't seem to be an issue here, so with that in mind:
1. NBS Statement series I Blue sheath
2. Purist Audio Dominus Rev B
3. AudioNote (Kondo) KSL
The NBS will slaughter the Kimber on the mids and highs; AudioNote will best Cardas on the lows. My recommendation, however, is to use a speaker cable from one manufacturer (although I do recommend in many instances using IC's and spkr cable from different makers). Purist is a nice compromise. If it was me, and I was an experimenter with money falling from a tree in my yard, I'd listen to the NBS/AudioNote combo. Just don't be surprised that as your sytem improves in "musicality" (the ability of a stereo to catalyze a deepening musical perception in the listener's mind) that at those deeper levels, you perceive discontinuities when cables are matched, even good ones.
It would also help to know the rest of your system, IC's & PC's included, and, if an issue, whether you listen to digital or analog predominantly, and, of course, listening preferences.