br...
As a fellow Klipsch owner, I believe the 1050 will be plenty. They are outrageously efficient speakers, and as Owls Warden said, the 1050 is believed to be conservatively rated at 65W. You'd have to double the power output just to see a 3db increase. I powered my Klipschs' with a H/K AVR 55 (55w x 5) and it was reference level loud in a 19 x 14.5 x 6.9 room. The H/K would strain at peak,ridiculous volume levels, and I had no subwoofer. 65W doesn't "read" like alot of power when you compare alot of the other A/V receivers coming out, but 65W plus Klipsch is alot. Also,IMHO, the sixth or rear center channel does help to complete the soundstage. Helicopters flying overhead disappear behind your head, not off to the sides...bullets being shot from behind you start behind you and pass to the front. If it's a concert DVD, you're in the crowd with people on all sides of you. I don't think you need to get a K-Horn or Heresy for the rear. Look at an SS1, RS3, or SF1 for that channel. They should integrate well with what you currently have. As far as THX, it is a minimum standard that a component has received to carry that certification. The company with THX certification must also pay to display or advertise that their product is THX. The standards set forth are a good idea, but whether a component is THX or not is not a deal breaker for me. In my opinion, the component video switching feature is not a detraction for the 1050. I believe component video should be run directly from the source (DVD player) to the television. But that's just me....