I'd second the Kimber 8TC(and who would know better than the system's designer, what would work best). An excellent, easy to work with and fairly heavy gauge(8) cable. It should virtually disappear in a short run(the best quality a cable can possess). Very inexpensive used but the newer, clear/white 8TC is really attractive. It looks so good it MUST sound better, right? I'm using it on my bi-amped woofers, and they are probably going to be a permanent resident.