Call Sean at Zu about the Pros, I think they are a slight upcharge for the beefier drivers.
I've had Druids and both models of Definitions within 6" of the front wall and had them sound good. My Pros now are only about a foot from the front wall and I'm very happy with them there.
I have no doubt they would sound even better further out into the room but my room doesn't allow it. The more important consideration with the Definitions is 213cobra's advice about keeping at Least 10 feet from the listener as the drivers take that distance to properly gel. If you have 12 - 15 feet, it's buttah.
I've had Druids and both models of Definitions within 6" of the front wall and had them sound good. My Pros now are only about a foot from the front wall and I'm very happy with them there.
I have no doubt they would sound even better further out into the room but my room doesn't allow it. The more important consideration with the Definitions is 213cobra's advice about keeping at Least 10 feet from the listener as the drivers take that distance to properly gel. If you have 12 - 15 feet, it's buttah.