Do you run a high end power cord on your sub?


I have a Rel B2 sub in my system, and have never really bothered with a decent power cord for it. I have an "Iron Lung Jellyfish" power cord, which is better than a stock cord. It is a $30 cord but is actually suprisingly good when you are just "testing the waters" of what power cords can do. I am considering something better, but not sure if this is the best place to spend money? What are your experiences with upgraded power cords for subwoofers? I am thinking about an Audience Powerchord e, as I use Audience power cords on my other components.

Other components in my system:
Thor Audio TA-1000 mk II preamp
BAT VK-55SE amp
Hyperion HPS-938 speakers
PS Audio PWD mk 2
Audience AR6T power conditioner and power cords
Nordost Heimdall IC's
Anticables speaker cables
mekong56
Far over 95% of all the brands who produces cables are not that special. That is why I hate all the crap what is on the market. This is the reason why people are not convinced about cables. I understand this very well.
To return to the OP. I would never go and buy an "allegedly superior" pc for a sub. However, as and when the pcs on the main components are upgraded the hand me down pcs , Transparent entry models in my case, end up with the HT and the subs. All my subs are RELs, FWIW.
I stuck a "garden hose thick" PS Audio IEC cable on my REL mostly to reward it for doing such a great job. I'm not sure it sounds better, but it feels better and that's enough for me.