Muncybob -
Supra is definitely good stuff. I cabled my HT with the 3.4Ply. I like that the copper is tinned which means no maintenance going forward. I did implement the shield system which seems to work - the background is inky black. I used the Audioquest bananas - gold over copper - and for a cost effective system I am very pleased. Warm, nice detail.
I also built a pair of power cables for my Flying Mole 100 amps which run the rears. I used the 2.5 - its a very well made, super flexible cable. I paired it with the Furu F-11 Cus, and covered it in techflex. Couldn't be happier. It handles well and sounds good.
Before I jumped I did as much research as I could - these products while unknown in the US are in fact highly regarded in the EU.
Lars, their US rep is very helpful - nice folks to do business with.
And I appreciate the fact that this is an honest to god manufacturing company that makes what they sell in their own factories and has a point of view about what works.
Visit the Supra home site: http://www.jenving.se/
Interesting stuff