What power cord do you like most on your amp ?

My preference now are Acoustic Zen Gargantua II cables on my McIntosh MC2301 mono's. I have tried many PC's over the years and they are my favorites so far. I haven't tried every cable out there and I have never made my own. Before the AZ's I only used Wireworld cables, just about all of the ones in their line except for the Platinum ones.

I do not want to spend more than 1K$ on each power cables.

Sygnergistic Blue power cables are pretty good with good transparency and speed of transient at reasonable price.

I bought 6 of them at 3 for 2 offer last November.

 I had been happy with them after using 4 months.

I am surprised no-one mentioned Shunyata yet, these are popular power cords.

Distant past with a Forte’ 4a amplifier I discovered aftermarket power cords worked, when I bought a Pangea AC9 for the amp. better bass easy to hear.When I bought a Bryston 4B-SST² I had upgraded to the Pangea AC9SE (original)
Later to the AC9SE mkII Signature.I also made a power cord out of Furutech ’28’ Rhodium plated plugs and DH Labs $8ft wire. And finally I bought a pile of Pangea AC14XL.Currently I have the Pangea SC14XL on the Bryston. and placed the DH Labs/Furutech on my Furman REF20 power conditioner. for best sound. All the rest of my power cords are Pangea AC14Xl, except one other DH Labs Furutech to the Conrad Johnson ACT2
If I had a pile of money wasting away.. I might try a Audio Quest Hurricane on the amp and/or a Cardas Clear Beyond. But that is not gonna happen for YEARS... Well, at least one more year.....
IMO if you do not have a great AC duplex. spending a lot on a power cord is a waste. The MOST an AC duplex can cost is $280 or so. and is definitely worth adding to any $280 power cord. Let alone one that is a $2000 power cord! Yes I am saying you are wasting your money if you have expensive power cords but cheap(er) AC duplex outlet feeding that $$$ power cord.