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
I use Audience powerchord e with my rel strata iii. It is worth the extra $. However, before I spent the $ for the powerchord e I upgraded the neutrik cable. I think this is the more important first step in rel cable upgrades.
I agree with Valinar. I replaced the the stock Rel cable with a Nordost baseline made to Rel spec. The sub bass got a lot tighter and I heard attack and decay I never knew was there.
I purchased a Hidiamond P3 powercord for my svs Pb 13 ultra and I had to turn the gain down 4-5db. Cleaner, powerful, tighter articulate bass. Had a S.R T3SE on it and for less than half the price the HD P3 devoured the Synergistic research cord. Enough said.......I also run an Hidiamond XLR 2 on it and It is a considerable difference than the RCA to the pre...