Isolated or dedicated lines for audio ?

Where is a good source for cryo'd wiring? Solid or stranded, whis is better for this use. So far the only place I've found is JPS labs at 1.50 per foot each. If you make two 20amp runs, any harm in having a common ground for both outlets? Grounds (and neutral) always wind up on the same buss later anyway.

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One more note. It is well worth it to buy the wiring and send it off to be double cryoed (www.cryogenicsinternational.com) before installing the wiring. It is a great improvement over non-cryoed wire. Since this is a one shot deal, you should do the cryoing since you will not want to re-do the wiring later.
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Keep one more thought in mind. The dedicated lines will take time to break in just as would any interconnect, spearker wire or power cord. A neat trick is to get the wire, get it cryoed and then terminate it with a male and female plugs and then run your refrigerator with the wire until you install the wiring (the longer on the refrigerator the better, 3-4 weeks would be great, longer would be better).
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Rgds,
Larry
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thanks larry