As a former Magnolia Pro with Best Buy, I would recommend, as far as Klipsch goes, that you go with nothing less than the Reference series. With employee accommodations the entire surround system only ends up being $150-200 more than the Synergy series and it is a significant upgrade. But I would also listen closely to what Chris has to say, I have heard those speakers and for the price, you really just can't beat them, especially in the area of accurate sound reproduction (they are after all designed to be studio monitors). Hope this helps a bit, and have fun with the choosing process.
Mike