Looking at the lower end Polk (LSi 3) and Klipsch SC1) Speakers. Costs for the centers are roughly the same, Range seems to be almost identical Klipsch claiming a bit more depth at + or - 3 Db Klipsch's sensitivity is 95 while the Polk is 89, but I got no idea what they used as a impedence when testing or what they weighted the frequencies. Any ideas where I can find this information? basically I'm looking at getting some moderatly priced speakers that I will stick with to get all 6 speakers I need for my new and permanent HT system. Polks tend to be a bit expensive as you move to the fronts and sourrounds where as Klipsch seems to stay a bit lower. They both sound good as far as I can tell.