Hey Stereo5
I have a XO3SE and a K01 and have had really impressive results (to me) with Triode Wire Labs interconnects. I run both through tube systems and enjoy the presentation and detail. I have used Goertz, MIT, and audioquest and prefer the Triode Wire Labs.
If you want to borrow a pair I could lend you a set and you could use your own ears and I have a real soft spot for Goertz and you could run them as well if you want to play around.
In any event TWL will not break the bank and Pete makes a hell of a cable.
Have Fun. pm me if interested
Happy Spinning