I owned the Valhalla for about 12 years of time. I bought the new 2013 Audioquest Redwood bi-wire. I was surprised that it beat the Valhalla in every aspect you Judge a cable for.
http://forum.audiogon.com/cgi-bin/fr.pl?fcabl&1365764680&openmine&zzBo1972&4&5#Bo1972
http://forum.audiogon.com/cgi-bin/fr.pl?fcabl&1365764680&openmine&zzBo1972&4&5#Bo1972