I'm afraid your sonic priorities are all over the place. Normally, unless something else egregious is going on, changing the speaker will make the biggest single change to the sound of a system. In your case, you mention listener fatigue. Suspicion naturally falls on the Klipsch. The first thing to do, then, would be to get a couple of other speakers in house and see how you like them. Look at Audio Adviser, Music Direct, and Crutchfield for 30- or 60-day in-house auditions. Evidently, the rest of your system offers plenty of scope for tinkering and tweaking, but unless you start here, you're just going to be applying elaborate and potentially expensive band-aids.
For instance, I don't see the Benchmark really ameliorating listener fatigue, if it's already there somewhere in the system.
Oh, and the most important single piece of advice is to ignore completely the first response that you received to your post.
For instance, I don't see the Benchmark really ameliorating listener fatigue, if it's already there somewhere in the system.
Oh, and the most important single piece of advice is to ignore completely the first response that you received to your post.