I've never tried Kimber Selects, but I've heard Diamondx2, Diamondx3, and Lapisx3 (all silver, and all discontinued) and I wouldn't call then grainy or "low resolution"
(these, and the Anaconda mentioned above are silver cables)
I have, currently, Opalx3 (2nd from top of old copper ICs)
and Python (also discontinued, top of the line copper ICs).
DIfference is in the tubes used to insulate the wires.
Sound is open, clean, clear, and perhaps a little laid back.
I've used with solid state, tubes, analog, and digital, and my impression is the same.
ALso heard Diamondback and Topazx3, which, for the $$ are also good stuff, but further down the line.
The only AQ cable that I have tried but didn't like was Lapis, which was a little bright, and "atypical" of the Audioquest House Sound.
TO address your question head on, I'd say that it is a musical sound, favoring natural presentation over etched details. As I said, a little laid back (sometimes very welcome) but not much. Not the least bit "grainy" sounding, easy on the ears, and I've preferred it, dollar for dollar against TARA, Kimber (never tried the Selects,)and Cardas (Golden Reference nice, but too tubby in the bass- but incredible presence).
so, perhaps reasonable minds can differ.