"Which speaker cable" will pose about a million different opinions. Not all cables sound the same, even in the same price range. What I have found from a lot of R&D is that better material will provide better sound:
- solid core wire is better than stranded wire (stranded will give a bright/harsh effect).
- OFC copper is better than tinned/cheap copper. OCC (Ohno) copper is better than OFC.
- Normal Silver (even 5N silver) will typically have an upper midrange glare/push and will not have as much bass/midbass punch.
- OCC silver is better in that it will not have that upper midrange glare.
- braided copper shielding will usually result in a more closed-in sound (not as open or airy = high frequency rolloff).
- braided conductors will sound better (think Kimber).
- silver cables may be faster, but they sometimes may not have an much bass.
I hand build all my own cables from 20awg solid core OCC wire. My cousin has tested the WireWorld Exclipse (which uses 28awg OCC conductors in a near solid-core configuration -- they are definitely not bundled strands). The report is the Eclipse does very well, but I will not be able to hear this and compare to my cables until next weekend. I will see if it sounds as good as my custom braided cable.