Before discarding your Klipsch you need to realize; 1. Klipsch is in many movie theaters, you mentioned you are mostly into home theater so it would seem Klipsch is a reasonable choice for authentic theater sound , 2. Klipsch is one of the most sensitive home speakers on the market meaning they will play louder than most every other speaker with the same input power which would also make keeping them a good choice. It's hard to understand how you need more power but the addition of a power amp as suggested already, is your most logical step. That is unless you don't like your Klipsch but you've had them for 8 years which leads me to believe they couldn't be that bad. In my opinion the current Reference or the line they most recently replaced are better sounding and looking than the older RF but that's subjective. After writing all of this I should have just said buying new speaker will not resolve the needing more power issue.