Expensive cable, like an expensive watches (which sometimes keep time almost as well as a cheap quartz) etc hopefully offers pride of ownership and decent resale value if it remains fashionable. I mostly use 2X7m various high quality pro sector balanced mic & line cables between balanced pre (AR Ref3) and active crossovers. I do own some fancier stuff (2 brands 2x4m) but its not as long and has to cross the middle of the floor where it gets trod on and the difference is negilgable despite the length differences. Those crappy phono plugs make more difference and should never be allowed within 50 miles of high quality audio, but sadly we're stuck with them for many things. Loudspeaker cable, particularly if it has certain types of pvc insulation, deteriorates over time due to various chemicals used in the pvc manufacturing process. A friend was testing cables for square wave transmission in hostile environments and oberved that charge begins to kindle its own track in the surface of the pvc. PTFE and silicone do not suffer this effect, he found. Generic cables are available in high purity with these jackets.
For a luagh see http://www.tnt-audio.com/clinica/bitsofwire_e.html
Cheers
For a luagh see http://www.tnt-audio.com/clinica/bitsofwire_e.html
Cheers