I just recently set up the Klipsch THX Ultra 2 system in my new dedicated theater. It consists of:
3 of the KL-650THX for front left, center, right, mounted on custom made Sound Anchor stands
4 of the KS-525THX for the side and rear surrounds - wall mounted
2 of the KW-120THX dual subs
1 of the KA-1000THX sub amps
Receiver is the Denon 5805 and source is the Denon 5910ci DVD/CD/DVD-A/SACD player.
I have read many things about these speakers and all was confirmed when I got everything set up and dialed in. AMAZING for both theater and music. In fact, music has never sounded so good in my system, and for comparison sake, I moved to this system from a complete M&K S-150THX set up, powered by Parasound amps and a Lexicon MC-12.
I was watching the new Rush R3 dvd the other night, which has a great remastered DTS track, and Geddy Lee's voice was spot on coming through the center channel. And, the subs absolutely ROCK! We watched War of the Worlds and I literally thought the room was going to collapse.
Overall, I couldn't be happier with the Klipsch THX Ultra 2 system. Absolutely amazing!