I sort of specialize in electrostats, as an owner of and dealer for Sound Labs and owner of Quad 57's. I conducted a rather extensive search of speaker cables to find what worked well, and found that cables with wide, flat geometries which minimize skin effect (such as the Goertz mentioned above) work the best. Such a geometry audibly improves clarity and dynamic contrast by reducing time smear (more significant with an electrostat than with less coherent designs), and since a flat cable has absolutely zero series inductance that delicious top-end air of the electrostats is preserved. Their typical low impedance at high frequencies makes electrostats especially sensitive to being dulled by a cable with series inductance.
The best speaker cable I found in its price range is the Magnan Signature, so I became a Magnan dealer. The Magnan Signature is probably the ultimate expression of the wide, flat geometry. I also like Goertz and Analysis Plus (and sell the latter), both of which take steps to minimize skin effect and series inductance. In my experience networked cables don't work particularly well with electrostats (I used to have MIT Terminiator 2's and MH-770's, and have tried others). I find most Nordost cables to sound thin with electrostats, with the notable exception of the superb Valhalla.
One of my Martin-Logan customers tells me that it's worthwhile to use the Magnan Signature on both the panels and woofers, which gets a bit pricey. I would have thought you could get away with just using the MagSigs on the panels, but he says the improvement in coherence is significant. So, for what it's worth, I pass that along as a vote in favor of using the same cable on both woofer and panel.
Best of luck to you, Sugarbie!
