I would try a Hidiamond P3 on your sub. It will perform better than any mentioned above for a very low price tag. I've had S.R and tossed it and never turned back. Especially for at least half to a third of the S.R cords. If you are running XLR try the XLR 2 - just amazing bass. Tight, articulate, accurate and deep. I had to turn my output on sub down 4-5db. If you really want to go to the end try the Hidiamond P4- rave reviews - those who've bought always keep.
You can read in my HD threads and others with the rave reviews of actual buyers of the Hidiamond cables - not people who just say they've tried them and haven't bought one single HD cord from the dealers( you know who you are).
You can read in my HD threads and others with the rave reviews of actual buyers of the Hidiamond cables - not people who just say they've tried them and haven't bought one single HD cord from the dealers( you know who you are).