my two pennith,
i spent about 3 months on and off sodding about with various gauges of silver wire,different conductor numbers etc.
whilst the top end was amazing with great detail i found as bigman said it can sound lean.i then tried a mix of copper and silver conductors and still couldnt find the right sonic blend. i just use now a good occ copper.
i totally agree on the plugs too,kle are hard to beat for the price,the ones i use have been modded to have solid silver connectors.