I couldn't help you with clarifying the gauge of the cables you listed Bryston, suffice to say the new Siltech G7 cables are excellent cables imho & are built to last. Of the cables you mentioned, I use Siltech 330i rca's with my Oppo 103 dvd player and they have terrific resolution and tonal balance.
Of the cables you mentioned, the cables I would be happy to have in my system would be the Siltech King sc's & Ruby Mountain II pc's, though if it were me i'd spring for the Ruby Double Crown pc's.
Of the cables you mentioned, the cables I would be happy to have in my system would be the Siltech King sc's & Ruby Mountain II pc's, though if it were me i'd spring for the Ruby Double Crown pc's.