HiDiamond Power cords...

Denon 1- The p-4 is quieter with a bit more bass weight and upper end extension out of the bag. As a thicker cable, it also takes longer to break in than the P-3. My p-4s are not broken in yet, so I can't tell you where they will be sonically in 3-400 hours. What I have heard is that they are pretty spectacular at that point, but won't know for a while yet.

Fascinating... Fancy seeing you here Harve!

Bacardi and Fplanner, thank you guys, I was one of those skeptics of the Hidiamonds in the beginning of their rollout in the US - no audition, a lot of praising . .. Long story short, now I have a loom of Hidiamonds for my all system that includes XLR 3, HD 8 SCs and P3 power cords.
One power cord connects Wall ac to power distributor and other two go from the distributor to CD player and amp. For now I have budget only to upgrade one power cord to p4. Which one do you think most critical/effective in my case?
Thank you.

@Denon1, try the P4 from wall to power distributor first. Let it break in the hours it needs(400-500 max). You have P3's everywhere else so it's pretty easy to swap later to amp or cd. Have fun with it and find the most notable positive effect/differences possible and enjoy........

PC to the CD player.