I wish I had the opportunity to try Siltech Signature series loudspeaker cables. Certainly that would have been my preferred choice and I'm confident that Kings would best the WW PE. That said, I do not want to understate the formidable performance of WW PE G7. The WW PE G7s are built well. I am very happy with the WW but honestly, I only have them because the dealer special was too good to refuse. I can live with them as IMO, loudspeaker cables are less critical than say stage 2 signal cables and comparatively the outcome between the two loudspeaker cables in my system would be marginal.
As for the RMII, I agree the RHII would have been just fine for the MC2301s. Again, the outcome was a result of a deal of the day. I have tested the emissions of the RMII and performed the same test against other brands. Siltech RMII have ZERO emissions. No BS with Siltech. Real deal.
For me the local dealer price for Siltech has always been a difficult one.