Audioquest type 4....buy it from audio advisor as they will terminate them however you see fit. They use the bulk form of the type 4 cable with white jacket.
Also QED makes a nice cable in the XT25. I have used their silver anniversary xt biwire cables for years with great results.
Also QED makes a nice cable in the XT25. I have used their silver anniversary xt biwire cables for years with great results.