First of all, I'm now going to Klystron's friend's house to watch movies. :-)
But seriously, I, too, run a horn-driven system. JBL HT4V's up front, an HT4H in the center and HT-5's in the rear. I agree with Klystron that some Dolby Digital tracks seem a bit bright, but IMHO horn-based systems sound more "theatrical". They throw a huge, controlled soundstage that easily rivals your local google-plex. In addition, the blast from the compression driver doesn't break up as it pummels you with explosions, etc. (See Klystron's note about the 0db setting...)
I especially like how huge the soundfield coming from my center channel is. I have home theater seating that consists of four loungers attached by "wedges" to hold drinks, etc. The distance across the seating is over 12 feet, and the center channel sounds the same from every chair. In fact, if I walk around behind the seating area, I literally have to hug the side wall to clear the sweet spot coming from the center channel. It's that wide...
I will say, though, that music through my system does fatigue me sometimes. But it is a case-by-case thing, not an absolute.
If you like horns, get 'em! I think the 950/770 is a fine match.
[This message has been edited by peteypete (edited March 23, 2004).]