In the price range of $500-700 I have also thought about Cardas Golden Cross, Kimber KS-3033 and Nordost Red Dawn II.
In my system, the inexpensive Signal Cable copper speaker cable outperformed both the Wax and the Q-10. The music was far more engaging with the Signal Cable than with either of the other two, both of which made the music sound sluggish and veiled by comparison. My wife and two other listeners present during our A/B tests were also of the same opinion. We are currenly using Analysis Plus Silver Oval cables, and they are excellent. As always, YMMV.
We have a SET amp/horn system. Did not care for the AP Solo Crystal IC's. Liked the AU24's better. Still, we find silver to be the best. Verastarr now makes a copper cable that outshined both the AP or AU24 in every way possible: better clarity, authority, transparency, you name it. The other two cables made the music sound distant in our system. With the Verastarr's, the music was as emotional and engaging as we've ever heard.
All the best,