Always interesting to hear the latest Mr. williewonka. I use two pairs of your RCAs that are Tinned OFC copper. OFC is just fine. :-) MX110/C20 (either or) and a MC225. I use your RCAs two pairs. I've never seen a soul walk away from that combo not shaking their head. Nothing sounds like that with push pull small planars. The interconnects are the BOMB. I been using the 16 strand OCC/teflon and red copper interconnects as speaker cabling for the same setup.
We didn't have this stuff or the planars/ribbons I use, in the 70s. Cables made a lot of difference in the SQ from when I first got the gear. OCC with good silver plating and very thin teflon in a ribbon is hard to beat too. Simple, easy to build, I really like them. :-)
Regards