I have a 15' pair of Star Quads that I build (for less than $25 including Neutrik XLR connectors)
and they sound fine. I never did do any kind of comparison between my old mongrel no-name
cheap cables and the Star Quads but I can't say that after using the Star Quads that I noticed
and significant difference.
If anyone is looking for some serious cables, a friend of mine is selling his 4m pair of Harmonic Tech
Truth-Link cables. He swears these were the key to his recording success and I've never heard a
bad tapre from him. I'm sure the Neumann's and V2 didn't hurt either
PM me and I can't point
you in his direction if you are interested.