Thanks for the feedback, guys. I appreciate it. I do listen to a lot of music in 5.1 and the Klipsch surrounds are very good for that. I like the way they fill the room and they are a great match with my Anthem AVM-20. I imagine the QS's will do at least as well because they are almost as efficent as the Klipsch's. I'm pretty sure I can adjust the sound levels on the Anthem so the QS's match the rest of the speakers. What I can't do anything about is the possible tonal differences between the horns and the QS's. I'll have to give it a little more thought. Thanks again for your ideas.