Best Speaker cable in the $400.00-$500.00 range for 2 meters


I currently have a Rogue Audio Magnum power amp, Rogue Preamp, Triton 5 speakers with 2 SVS subwoofers,
and a Cary Audio CD player. My current speaker cable is by Discovery Cable. Looking to upgrade my cable and
was recommended the Nordost White Lightening which retails for $377.00 a pair for 2 meters and the Nordost Purple Flare, both in the Leif family of Nordost for $500.00 per pair  for 2 meters. In short my budget is
 $500.00 per pair. If there is any other cable that can be recommended in my price range that my be superior
 I would appreciate any suggestions.  Looking for the best use of the $500.00.
128x128kjl1065
Make your own speaker cables from 12 gauge Duelund Tinned - copper in cotton, oil impregnated wire. Will cost less than $500 and most likely will sound better than whatever you can buy new or used in that price range (after break-in).
If you must buy a speaker cable built by a professional manufacturer, look into Cerious Technologies Graphene speaker cables.
Please read http://ielogical.com/Audio/CableSnakeOil.php before spending your money.

Changing cables may make your system different but better is highly questionable from recommendations... 
@lak is spot on about the Duelund.  I can make you a set with the 12 gauge Duelund for your budget and you simply cannot do better.