I guess I'm from the old school, run individual wires for all runs. I have had better luck in all of my installations this way. But maybe it's time for me to look at the Active Balanced drivers from Audio Control. I've seen passive versions of these devices that totally suck....

If you look at their FAQ on these devices, it says "where can I get these fabulous problem solvers". I guess that's the way I look at it. If you can run it, run good shielded cable.