PC Upgrade: Cary amp/CA CDP

I currently have Shunyata Venom power cords hooked up to both my Cary SLI-80 F1 Sig and Cambridge Audio 840C. I was thinking about upgrading to a couple Shunyata Diamondbacks to see if there was any noticeable differences. Does anybody have any experience with PC and these components? I was thinking that maybe different cords for digital vs tube amp also.

I'm open to suggestions but don't want to break the bank. $200 tops for each.