That's a really interesting question. I asked Acoustic Zen the same question in respect to my Legacy Classics right before they brought out the Hologram II BiWire and their answer was the Satori Shotguns, because the Hologram were optimized for a 2.2 K crossover. As I remember, your Signature III's when driven biamped cross over at 120 Hz (only the 10" speakers are driven on the bass leg of the crossover, the other speakers are all driven off the treble leg). I'm not sure what they'd recommend now with the hologram II's, but if you get an answer, I'd appreciate knowing!
Greg
Greg