I used Blue Jeans cables when I had four subs,for the two on the front wall.Then longer Monoprice to daisy chain the other two in back.Nothing wrong with BJ,well built and attractive.
You guys motivated me to try a Cullen 10 gauge pc on one of my two subs(I only have the one).I'll repost tonight if it makes any difference. If so I'll spring for two to use permanently on the HSU subs I have currently.Cullen also sells RCA cables that I haven't perused yet, but I mention it in case anyone is interested and wants to take a look.