Interconnect recomendations, ~$500 new or used, RCA...

The Wireworld  Electra 7 power cords are impressive at their price point, very quiet and dynamic.

@pmboyd OP297 posts

... feeding a MHDT Orchid tube dac using NOS Western Electric 396a triodes ... Audioning interconnects between dac and amp.

Another approach, fwiw: 
DAC: replace the warmer WE396A with the GE5670 5-star "Triple Mica" in the Orchid DAC and realize added clarity and depth.  
ICs: for another $50 up the line demo the AP Crystal Solo interconnects. Give them ~100hrs to settle in 

This is my final setup on both, no more tube rolling or cable changes after landing on this. Clean, clear, musical, larger sound stage with more depth. Now hearing things I never heard before with other interconnects and DAC configurations. 

its a crap shoot....cables sound different connected to different components.  Get a bunch and return the ones that don't do it for you

Sounds like you may have found some good synergy with the Wywires, but if you're still up for another comparison here's a pair of AZ Silver Ref IIs you could probably sell for little/no loss if they don't work out. I'm not a fan of the AZ Matrix Ref IIs, and either the Silver Ref I or II are far better interconnects IME (I own all 3). FWIW...