It is recommended like what Audhile1 suggested that best powercord be placed at the Hydra. It makes a huge difference. So in this case I tried it both with the Copperhead and the Python on the Guardian 4 (now hydra4). Python wins!!!
Shunyata Python versus copperhead for power amps
I am considering either a 20A python (perhaps the older alpha with the red ends) or a copperhead that will drive a Guardian 2 conditioner. I already have a python alpha that I use for hydra 8...all my digital grea is running off of it. So, the Guardian + new PC will just run my amp and a powered sub. Any thoughts? Would i see a serious difference between the two PCs? Should I hold out for a helix or would antoher python alpha (pre helix) do fine? Thanks for your two cents!