The Tone Defender cable from Harmonica Planet is demonstrably in a class by itself... no other screw fitting cable approaches this combined level of shielding and dead solid reliability.
Click the 'Mic Cables' tab at page top for details.
I try to keep at least one 20' cable in stock. Demand sometimes exceeds production capacity, contact before buying if your order is time sensitive. Sometimes a short delay for other sizes (can build to any length, ask for pricing). Right angle connectors are also available. If I'm on the road I might not be able to mail it until I return, but often carry a small inventory when touring.