I just started my theatre myself. I just purchased a single La Scala to compliment my K-Horns and let me tell you...WHOA..Of course I noticed a huge differnce from a KSC C-1 center that I previously had. I took me a while to come across, one but well worth the wait. A Heresey, Belle, La Scala or Cornwall but compliment your K-Horns nicely. Again, I am the NEWBIE here but have heard some noise in the past.
Denon 4800
(2)DBX 3BX-DS
DBX 120X-DS
DBX 14/10 Computerized EQ
DBX 400XG-Program Route Selector
K-Horns fronts
La Scala center
Heresey II rear
Velodyne FS-1800