If you have good equipment and good synergy then this should not be a matter of critical concern. Any decent 16 gauge braided copper wire should do for a short 6 feet.
Frankly, there is no technology in speaker wire relative to all the technology in speakers. Spending as much as you have done or plan to do on a minor tweak like speaker wire is not effective especially when said wire is approaching the cost of your speakers / in such a case, a modest speaker wire coupled with a speaker upgrade would bring a lot more benefit.
apologies if this does not answer your question - just felt compelled to warn you of diminishing returns. As significantly higher cost bits of wire are still fundamentally bits of wire. A better speaker with higher cost drivers and good design and construction presents a huge opportunity for improvement.
Frankly, there is no technology in speaker wire relative to all the technology in speakers. Spending as much as you have done or plan to do on a minor tweak like speaker wire is not effective especially when said wire is approaching the cost of your speakers / in such a case, a modest speaker wire coupled with a speaker upgrade would bring a lot more benefit.
apologies if this does not answer your question - just felt compelled to warn you of diminishing returns. As significantly higher cost bits of wire are still fundamentally bits of wire. A better speaker with higher cost drivers and good design and construction presents a huge opportunity for improvement.