Shunyata Zitron Cobra vs Transparent Reference G5

I have the same question. I recently upgraded my power amp with Audio Research Reference 75 SE with 20 amp socket. My current PCs are all 15 amp ones so I am looking for good and reasonably priced 20 amp PC. Based on availability from the Cable Company Used List, I am contemplating the following ones:Shunyata Anaconda Helix CX, Python Ztron, and Cobra Ztron. Could you provide your opinion on these? I have all Synergistic Research PC and am not familiar with Shunyata other than their good reputation on the cable (PC, IC, SC) in general. I also have a good offer of Transparent Audio Reference 5 (20 amp) from a local dealer.

Thank you for sharing your impression of the Delta NR power cord.
You are suggesting Delta NR might be the better performer than Alpha HC, right?
Did you have a chance to compare Alpha NR vs. Delta NR by a chance?
I don’t think I will go up to Sigma NR, which is way above my budget.

One other question:
I have Shunyata Hydra 6 power conditioner with an old Venon 20A power cord, on which I hook up both DAC (Cary 200ts) and preamp (Audio Valve Eclipse) using Synergistic Research Element Tungsten power cords (15A). If I switch Venon to either Alpha or Delta NR, do you think I will have a substantial improvement in sound, or maybe it is time to replace the Hydra 6 all together? I am planning to connect the power amp (AR 75 SE) directly to wall socket without a power station in between.