Check out the speaker cable I bought from Joe (hearingimpared), This is speaker cable that Joe bought back in 1989. I think he bought a 250 Foot roll and has been selling it off over the years.
This stuff is amazing, it made a difference right away, I heard things I didn't hear before in music that I've played before.
The only bad thing about this stuff is it's really hard to find.
Joe sent them to me with Vampire Bananas and he also sent me a bunch of pants.
I need to go through all 8 wires and re-terminate them, apply DeoxIT and put the pants on.
If you can find this wire then buy it! and let me know if you find any, I need another 100 feet ;)