Ahh... that's something to be wary of. Some of the newer Klipsch sets are not that great or valuable. Like some of the Klipsch THX sets, or the sets for PC's.... They're not terrible or anything, and for cheap they're nice speakers... But nowhere near the quality or value of things like their RF or RS series speakers. Even some of the smaller bookshelf Klipsch's are great.
I used to have a Klipsch 5.1 system in my room, but it has since been scattered among other rooms and houses. My dad is a total Klipsch junkie. We must have like 10 pairs of them in various forms. Be on the lookout for older Klipsch speakers like their "Cornwall" or "La Scala" or "Corner Horns".