The best plug wire out there is the spiral wound. It is the most durable. Spiral wound wires do not get the harmonic vibration that solid core wires have. These harmonics actually destroy the solid core wires from the inside. IMO, Taylor Thundervolt 8.2mm wires are the best. They are 100% silicone, have the spiral wound core and only 50 ohms of resistance.
Check them out.
http://www.taylorvortex.com
Not sure about the dyno issue.