Well, you have some really good speakers, and you should not compromise, (too much), so I recommend buying two pairs (identical length if possible) of Audience AU24 speaker cables. (FYI: having two pairs is the same as having bi-wired cables, as the bi-wired cables merely share a set of terminations at the amp end). These are really good cables, IMHO, almost to reference level (and according to some reviews, they are). I use them for my Studios, and find them to be among the best I have heard. (Used they can be found for around $400-500 for a 2m pair.)
As far as sound goes, they are pretty neutral with just a touch of warmth. I have compared them to the Nordost Valhalla cables (in my friend's system), and while they did not sound quite as neutral (but very close), or as ruthlessly revealing (what does?), they were within spitting distance of them. (I use a solid state preamp, and a hybrid amp, as well as a pretty neutral sounding cartridge and cdp, and so I don't mind just a touch of warmth being added.)
Here are two reviews of these speakers cables, and both reviewers loved them.
Stereophile Review
10Audio Review
Good luck in your search!
As far as sound goes, they are pretty neutral with just a touch of warmth. I have compared them to the Nordost Valhalla cables (in my friend's system), and while they did not sound quite as neutral (but very close), or as ruthlessly revealing (what does?), they were within spitting distance of them. (I use a solid state preamp, and a hybrid amp, as well as a pretty neutral sounding cartridge and cdp, and so I don't mind just a touch of warmth being added.)
Here are two reviews of these speakers cables, and both reviewers loved them.
Stereophile Review
10Audio Review
Good luck in your search!