I recommend the Pure copper or silver IEGO IEC found here: http://www.audiocircle.com/circles/index.php?topic=53868.0
Pricing:
Ag-R301(BU) $90/ea (Solid 9999 silver)
Gu-R301(BU) $30/ea (Solid 9999 copper with gold plating)
Shipping:
$20 flat rate for any quantity to anywhere in the world.
No soldering required. I have 3 of the gold plated copper version and am happy with the results.
Pricing:
Ag-R301(BU) $90/ea (Solid 9999 silver)
Gu-R301(BU) $30/ea (Solid 9999 copper with gold plating)
Shipping:
$20 flat rate for any quantity to anywhere in the world.
No soldering required. I have 3 of the gold plated copper version and am happy with the results.