Abex:
I was under the impression (from discussion of the topic with a cable manufacturer) that it had to do with dialectic properties (perhaps the effecting the portion of the signal running on the outside if the wire).
I also feel that it would wrong to assume that the cable with the highest/most pure conductivity is always the best for our application.
Yes, it's just one more thing to think about and there are already enough factors to drive one MAD, IMO.
I have pretty much given up on DIY cables (just use the ones already made that sound nice, plus the OTA cable) as I have come to dislike the lengthy process of auditioning/comparing cables in general.
Maybe it's less of a hassle for you now that you have a cable cooker?
I only accepted your audition offer as there are not many people running OTA in their systems and this is the cable that you are trying to match/beat.