Harmonic Tech AC10 vs Audiience PowerChord

When I had my Odyssey Stratos Extreme, I used a Shunyata Copperhead pc which I am now using on my Mac amp.

I've had an audience powerchord on my preamp for the past four years that works out very well in that application.I tried several others but the powerchord was just right.I find it to be neutral,transparent,and relaxed.It doesn't emphasize any one frequency.
I like the harmtech speaker cables a lot,wish I still had them.I went with little bookshelf speakers for a while and they were just too heavy though they sounded divine.

I borrowed a handful of power cables from The Cable Company. One was the Harmonic Technologies AC-11. It bested all the other cables I tried. $350 New. I found a few of them on Audiogon used for around $125 each.

I have the AC10 power cord. It's been on my Modwright swl 9.0 preamp for about 5 or 6 yrs. Had a hard time finding one at the time but there is an audio store in Windsor, Ontario that had enough wire to build me one. An outstanding PC at any price, that offers detail, separation , soundstage. I'll never sell it.

Thanks to each of you for your comments and suggestions. I saw an HT AC10 for sale new for around $260. I’m very tempted. I had a lot of silver wire for SCs and ICs and really enjoyed it, but the high purity copper of the Pro 9s has been a very pleasant surprise. So part of my thought process is trying to figure out if better copper feeding my amp will make things sing more. 
Regarding the PowerChord, JTCF, I agree that it works really well with my 6sn7 tube pre. As you say”just right. 
I also have a Virtual Dynamics Nite II cord to my DAC which sounds great, but only in that position. 
Funny how this Jambalaya of wires seems to work, all with slightly different traits with each of my components. 
If I were filthy rich I’d get an entire loom of just one product, but it just seems to risky if it didn’t gel with my rig. 
I know cabling isn’t supposed to be a tone control, but it seems impossible to avoid if you’re experimenting with one component at a time. 
Thanks again fellas and hope you all have a wonderful holiday season. 
Other opinions are welcomed.