Powercord recommendations on CAL 15 & Rogue 66/99

I'm running Rogue Magnum 66/99 and wondering if there is any benefit to upgrading the powercords, and if anyone has found any particular cords that work best?

Other gear is CAL CL15 cdp and Tyler Ref Monitor speakers.
Interconnect are Transparent MusicLink Plus.
Will be changing powercord on CAL CL15 also so if there are any recommendations please say so!