I use a Cardas Neutral Reference phone cable (to EAR834P, no mods, Tele 12AX7's), never used anything else, never wanted to. It doesn't get any lower capacitance than the Cardas cables. In fact, you may find it hard to find published measurements from other cable manufacturers--if you believe in measurements?
It's a little more expensive than the VPI. I've heard that Discovery cable makes the VPI from the same cable as in the tonearm itself, and that you can purchase the same Discovery branded cable for cheaper. You might want to do some checking. Of course all of this is dependent on your system.. You might post your system and listening preferences so others can get an idea of your goals.
I use Clarity Labs Foxfire bought from Bill Baker at Response audio between the phono and preamp. Good stuff, great guy, reasonably priced.
If you're trying to use cables as a tone control--which alot of people do---you'll just have to audition.
Cheers,
Brad