Are Liberty Speaker cables (UltraCap or ExtraFlex, say) any good? They seem reasonably priced and designed for use by system installers. What is more, the UltraCap range is THX Ultra certified! I want to hook up my Proac Response 1SC / CC1 and don't want to spend excessively on wires, if I can avoid it. If you think that the Liberty Cables would be unsuitable, what would you suggest instead? (QED, Chord). I also have 10-year-old some Audioquest Indigo 2 solid cable at the bottom of the cupboard.