Like I said before I have no desire to own a 50,000-100,000 dollar system.You can spend less than $10K and have mind-blowing sound. Given that you like hard rock, I'd suggest a McIntosh SS amp, which mates well with Klipsch. Add a good tube preamp, some decent cabling, and a good source, and you're done. Like many others, I'm a huge fan of SET amps, but they do not push metal and hard rock like SS does.
Darkmoebius, there is a familiar house sound between the K-horns, La Scala's and Belle's. However, there is a significant difference in the low-end response. I found the La Scala's to benefit tremendously with the addition of a subwoofer. They are rated down to 53Hz, and obviously, there is a lot to be heard (and felt) below that point. In addition, the K-horns expand the intimacy of the La Scala (and Belle) to concert size. They play much larger, and the instruments stage at a size that is more true to life.
Hope that helps.