Look for a used pair of Acoustic Zen Satoris--I'd take a single run of those over a double run of just about anything else for the same price. I'm using shotgun bi-wire Satoris with my 5.3s and the midrange absolutely came alive with this cable. I've tried hooking up a single run of Satoris, and while I prefer the double run the single gets you most of the way there, and you can always try jumpers. Best of luck.
Tim