I used to have mostly Purist 20th Anniversary (the pre cursor to Canorus). They are fantastic cables...extended, quiet, etc. I have since moved to Shunyata ZiTron Anaconda. Cord vs cord the anaconda zitron's have a little more resolution and clarity but a little less beauty vs purist. The newer Purist power cables with the networks i have not tried...
I will say, the reason I made the switch was the Shunyata in conjunction with the Shunyata Triton or Triton/Typhon (which I now have) is just pretty much amazing in terms of the resolution, clarity, dynamics, super quiet allowing all sorts of energy to appear in the soundstage from various things. Right now I have 7 Anacaonda Zitron's, a Triton, a Typhon and 2 King Cobra CX's (on the clock and transport for digital).
Now the Purist cables with the networks may do this also...I am hoping to try some on my amps soon as a comparison. PS, I thought the Purist Canorus was a alloy of gold, silver and copper...