Power cable for REL sub -- modestly priced


Does anyone have a suggestion for a longer cord for a REL 328 sub? It has a class D amp.
Before you suggest high dollar cords, please know that I'm not a skeptic, but am tapped out for power cords. And, for what it's worth, I had a Pangea AC9 1 meter power cord which I experimented with using my REL. Made zero difference. In fact, in an exchange with REL, they said this: "A while back, REL tested some third party power cords with our subs but did not find a noticeable impact."

So, my question is about a decently made but not pricey brand of extension cord for a REL sub. I'm not looking for Shunyata etc.  Any suggestions? Thanks.
128x128hilde45
Tried different power cables but made no difference with my REL.

So when I needed something longer I just got a basic cable from Amazon. 
Have a pair of Rel S/812 I use Pangea 14 I believe on both units just because I have them did try PS audio AC —5 since I own them no difference although I do use 2 dedicated lines plus PS audio outlets & PS audio decket have not tried the originals that came with the unit Also own a couple of Zu audio Events PC Silver cables but have not tried them . Have heard good things about audio envy PC
@a_shah -- your post's style seems inspired by Gertrude Stein. Viz., "We are able to notice that each one in a way carried a bundle, they were not a trouble to them nor were they all bundles as some of them were chickens some of them pheasants some of them sheep and some of them bundles, they were not a trouble to them and then indeed we learned that it was the principal recreation and they were so arranged that they were not given away, and to-day they were given away."
I do have a pair of Rel S510 and other 
Rels in the past and cannot recall 
hearing any difference with upgraded 
power cords.
I think it has to with class d amplification.
 I am currently using Pangea power cords
with my Rels.
 $$$ owerades cables do do nothing....And for a sub even more so, if there was any interference. it would be at the high end and well you are talking about a sub,,,,If your sub turns on your good