Power cables for PassLabs preamp and poweramp

I just setup my pass xp20 pre and xa30.5 class A amp, finally moved n unboxed everything after 15 months.  I been wanting 2 try some new pc I now have nordost---soundstrings---AQ----n just bought a shunyata ps 8 package----I find the venom defender does not sound good with the pass equipment.

Those r just a few of the PC I have used in the past, I have been advised 2 go with the Shunyata PC.
I would be thankful for ur input.....I also just ordered Maplewood 4" speaker plinths for my Gallo speakers
because I now have a concrete floor 4 the first time-------player is oppmodwright full mods.