Advise best biwire cable for System Audio Rangers

The best cable on the market today is Mosaic but there are other good ones as well such as FMS. You have some flexibility because your system is warm. If you want a little "sparkle" to the sound you could look at Synergistic or Audioquest.

Mosaic is manufactured by Intuitive Design and known for their speakers and electronics. The cables use carbon nanotube arrays.

I work for a dealer that sells them but if you call the company they can tell you where the closest dealer is.

Yes I do and I have listened to 75% of the cables on the market. I make this statement because of the degree in which the cables beat other "legends".

These cables are a radical difference in design musch like Hill Plasma drivers, David Berning Hybrids, Futtermann OTL amps, and Warfedale's invention of the crossover.

You can't hear the difference having a 3 ft. cable on the left speaker and a 25 ft, cable on the right.

The phase is so perfect that you can hear the curve to a singers face. It is scary!