They do sound pretty darn good and yes, it seems amp problems are common. THX does not seem very impressive any more. We recently built a home theatre and I filled the room with Klipsch speakers to match the old pair of choruses that I love. The system was expensive but great. Interesting how the salesperson nudged me toward Velodyne subs. I was going for the Klipsch subs but my experience with this one put me off.
Thanks for the reply.