I would recommend that, to spend your money more wisely, you should do much more research. The Klipsh is no hi-fidelity speaker - perhaps less so than the Polks you have. What the Klipsche is, is a high SPL speaker with a very directional high frequency dispersion pattern, leading to a, uhm, what might be best described as a 'headphone like' treble characteristic that gives it one of it's signature characteristics. The cabinets are very poorly designed/built on all Klipsch speakers(including the Reference line), being very high in cabinet talk/resonance, causing severe timbre distortion. I realize that most audio enthusiasts don't realize it - but it causes a profound impact on the sound signature. In fact, if you are very interested in music listening, and if you want to spend around $1500 and get a true/drastic upgrade, go for the Paradigm S1 speakers and couple them with a decent subwoofer. It's a 2 channel solution - but 2 darn good channels will beat out 5 medicore ones any day of the week. Buy a 3rd S1 later down the road for a center channel and use two inexpensive speakers for the rear channels(these are the least important - and primarily only contain effect/ambiance cues anyways). The S1 speakers, while not being completely inert I expect, will be far lower in resonance, due to their solid cast metal cabinets with bracing molded in every 2.5"-3" or so. The S1 also has exceptional off axis dispersion - pretty much superior to any other hi-fi monopolar speaker I know of, except some other Paradigm models and a pro audio monitor using a similar HF assembly. If you want to go cheap, I can still recommend speaker that fit the application for better fidelity as compared to Klipsche.
-Chris
