Upgraded power cables- Who's on First?

I cannot upgrade the two amps because they are hardwired. everything else had been upgraded.
Next I should look at the speaker cables. One pair (biwired) is top line Straightwire and the other is pretty old Monster Powerline 2 I believe.
Is it important that they match?

Please let me know your thoughts on the Pangea. If you hear a difference, I will consider a purchase. Thanks.

I think because they demand the most power, that the amps should get the best power cords.
But then I also feel that the end(speakers)of the system is where I would start to place my priorities and work backwards.
Linn be damned.

The best case is the same quality power cords to every component.
The full loom approach which is one Brit mantra that I believe in.

bad in = bad out. Putting a better power cable on your amp first won't make your signal any better if the signal coming from the CDP has bad power. The better the signal to start off with the better it will be when it reaches your speakers.

You need to get rid of that virtual dynamics power cable, however. It's over-priced, mechanical and unmusical... but gives the impression of being musical artificially -- been there done that. I have a few better suggestions.

Who's on First? Most important power cable is the one from the breaker box to the outlet. Can I assume everyone has a proper dedicated line? Two would even be better.