Wow, that's an incredible price. I didn't even know that there was an older (almost a D’Appolito array) revision - heh. I wonder why they changed that. D’Appolito arrays work so well if done right (almost make it seem like one large point source of sound rather than multiple smaller point sources, and also minimize cieling and floor reflections).

Edit: now that I think of it, although it is similar in appearance, I doubt that the crossover setup has something that would even be plausible in a D'Appolito array (I believe they have to be only odd-order crossovers for the limiting of vertical dispersion), but it could still provide a larger single sound source.