Steve, from the Revelation Audio Labs' website:
...each discrete ultra-pure silver wire conductor is
hermetically sealed within its own oversized 100% pure virgin Teflon
(PTFE) hollow sleeving tube, air being the best practical dielectric, and
Teflon being the insulation material with the lowest dielectric constant
(2.1). The interior cross section area of the tube is by design many times
greater than the diameter of the wire, which minimizes the area of
contact of the wire to the insulator. This system provides a huge air
dielectric that is unaffected by ambient atmospheric conditions. The
resulting characteristically low dielectric constant and extremely low
capacitance is responsible for the high propagation speed of our
cables.
Also, while you make a valid point about 30 day MBG and long break-in
periods, I'd personally rather have the option of an audition period and
return policy. Break-in can be accelerated with a cable cooker, if
desired. And, I've never heard any appreciable difference after about
three weeks of break-in that would change my decision of whether to
keep the cables or return them.