The most transparent speaker cable

This really clears things up.  Enjoy.

http://www.roger-russell.com/wire/wire.htm

Roger Russel's writing is entertaining at times but very dangerous! He mixes good and true data with his own biased (and often times wrong) opinion.

For example:
" What if you use wire heavier than the minimum size recommended in the table? There is no audible improvement but there can be a considerable increase in cost."

This is plain nonsense! I compared silver wire from 16 AWG up to 6 AWG - the differences were everything but small. I just stopped at 6 AWG because the difference between 6 and 8 AWG was rather small compared to the improvement changing from 10 to 8 AWG. BTW - my speaker wires are 7 feet long - Roger Russel's table states 22 AWG is sufficient for an 8 Ohm load!
I can only recommend you try it for yourself and get 8 or even 6 AWG silver wire from riogrande, stick it in cotton rope and listen for yourself. You will be amazed - no matter what speaker cable you're currently using!

The roger russel table is right, but you have to pick the gauge based on length and the lowest impedance your speakers dropped to and some. Then after that, the benefits of larger gauges become lesser.  You get 10-12 gauge with conectors that do not screw things up and you can rest relaxed... you'll have sound good as good as your system can produce.... guaranteed or your money, back!

I used my 12 gauge stranded oxygen free copper lamp cord, for several years.  Then, after I got into 2 channel again and upgraded everything else, I was still unhappy with the sound.  Oppo, Parasound Halo, Paradigm Signature in my system then, and the imaging from these was rather 2 dimensional and plain.

I didn't know that then, only that something seemed to be wrong for a system costing several thousand.  So finally after racking my brain and reading everywhere I thought, how much worse could it get, and tried new speaker cables, Audioquest Type 4, at the suggestion of someone on another forum.  He suggested those because they could be quite cheap, and would be a noticeable improvement over stranded copper.  I had come to the conclusion that all cables sound the same, but more recently had tried mid level Morrow IC's and though they made some difference, it wasn't much.

That turned out to be because the old speaker cables  were holding back the sound.  The Morrows with the Audioquest was quite a step up.  Placement of instruments, depth of sound stage, and a focus and clarity.  It's not that I had noticed I was lacking any of this, I didn't know what was missing.

Now, the Audioquest Type 4 go for $5/ft in bulk cable, which is what I had.  When I decided to upgrade the speaker cables again I found the limits of the Type 4.  It's a warm cable with somewhat recessed highs, and less bass.  No surprise since the Type 4 is about a 17 gauge cable.  

Wow, that was quite a mouthful!  Point is, Russel is a quack who has misled many people and given false hope for others.  Either way, I suggest Wireworld or Morrow speaker cables, either of their top of the line stuff will not disappoint.

I recently became a dealer for Audioquest here in NYC to handle their power conditioners.    I was offered to audition their speaker cables and thought why not.   I got to extensively listen in my system to their 2 top of the line speaker cables, the Wildwood and Well signature.   
While the price is shocking, the transparency was as well.  Details emerged, distortions disappeared.  
Luckily we're running the new BHK 300's mono blocks, so the expense of upgrading to the cables is not as bad as for those that. Need long pairs.   
Highly suggested to audition them, but I also suspect lower down the product line would work well.   

Another vote for Omega Micro.