Interconnects: Silver, Copper or Silver Plated?

A new discussion on an old topic: your experiences with interconnect metallurgy.

I've recently tried several different cables of different metals: Cardas (Twinlink -- all copper); Nordost (silver-plated copper); and Lieder (all silver). Each has a different sound. My speakers (Snell A Reference Towers) are known for having somewhat dark highs. I found that the Cardas multiplied this tendency, and the music sounded muted and dull.

The Nordost -- for my ears and my system -- were far better. I'm currently using their Red Dawn balanced for the IC between the CD player (Sony XA7ES) and preamp (Plinius CD-LAD).

Then it came time to fiddle with the turntable's interconnects. Cardas again made the music dead. Nordost Blue Heaven was an improvement ... but with the cartridge's low output, and the Nordost's minimal insulation, I found that noise easily entered the signal path running from 'table to phono stage (Plinius Jarrah).

Then I came across a real find. One of the guys who put Siltech on the map is Jaap Gunter. He lives in the Netherlands; while no longer affiliated with Siltech (whose products he designed), he now makes his own cables, called the "Lieder." These are all silver, heavily insulated, with locking RCAs. WOW! What a difference! The 'table now has sound quality approaching what I like best about CDs ("clean" sound with incredible range), while retaining all the warmth and beauty of analog. Even my wife (whose favorite expression is "Turn that DOWN!") was amazed: "Come on ... that isn't one of your super Mo-Fi gold CDs?" she asked.

I understand that system synergy is everything ... but I wonder ... has anyone else tried Jaap's Lieder cables? What was your experience with them? How about your experiences with copper vs. silver-plated copper vs. all-silver?