Melbguy1, Thanks so much for the excellent and detailed explanation. It is exactly what I was looking for. I am currently using CH Acoustic X-20 (2) on my Bybee Stealth PC and APL Master (modified Esoteric X-01), Valhalla (2) on my Esoteric Grandioso C1 preamp (it uses 2 PC's) and one Argento FMR on my Esoteric Grandioso S1 amp. The weak link are the Valhalla PC's. The PC's I am considering are: Mexcel 9500, Ch Acoustic X-20 and Jorma Prime or Origo. By the way, I added the F1/M1 connectors to the CH Acoustic from the Synergistic Black outlet to the Bybee PLC. It was a noticeable improvement. Thanks again.
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