My fronts are the r-620f towers and my center is the RC-62 II.
It's all part of a 5.1.2 setup. The surrounds are my old Dayton T-652-AIRs and the heights are B652-AIRs. They're AMT instead of horn, but all fairly bright speakers and blend well enough. I just wanted to make sure the fronts and center matched well, don't care as much about surrounds.
I honestly believe they work well because of the space, it's a 14' x 30' room with the Klipsches at on end on the short wall. The surrounds are halfway into the room, just behind the living room seating. I would definitely NOT want them in a smaller space. Even the Daytons' small AMTs were very fatiguing in my office (12' x 10') when listening in nearfield.