Don't get carried away! Comparing the 'worst' (Fender California) with the 'best' (George L) shows only subtle difference until you get to 20 feet or more. And again, if you use a 6-foot cable from your axe to a stomp-box, the cable from the pedal to the amp will have much less effect on the guitar tone than it would if you went straight from the axe to the amp.

Where the effect of cable capacitance shows most is with:

- High-value Tone & Volume pots.
- Low-inductance pickups like single-coils.
- long cables from the guitar to the amp

If I recall correctly, you use fairly short cables, like 10 or 12 feet, even when you plug straight in. And your new Variax has an active output (an op-amp), so it won't care what cable you use.