I have extensively auditioned Cardas powercords (for a year) and now own AudioQuest Hurricanes on my amps… Audio Research Reference 160m monoblocks and Ref 160s.
In my system, see my virtual systems, I was looking for absolute transparency with the lowest noise floor possible and the greatest dynamics.
I tried about every Cardas power cord for long periods of time (as well as others). I also, recommend Cardas interconnects and powercords all the time. But in my system they do not work.
After really struggling for the right pc for my amps I tried the Hurricane. Huge improvement. Every Cardas imparts a very small amount of warmth and attenuates the high frequency ever so slightly… it is really a small amount. On many systems this is all good… but on mine, I needed absolutely zero change. The Hurricane, is just a lot better. The AudioQuest Storm series took the audio community by (sorry) storm a couple years ago, for a really good reason… it is a tremendous power cord.
I use transparent powercords on all my other components. They are perfect.
So, it will depend on your system. With the exception of the Dragoon I would say you have the very “best” cord… assuming you are looking for the same thing I was.