First home theater. The room is the whole space above a 3-car garage. Getting (2) Klipsch RP-8000Fs to fill entire room with music. In the home theater part of the room, the listening distance is 10 1/2 feet from the center channel. Trying to decide whether to get Klipsch RP-504C (four 5 1/4" woofers 150w/600w) or RP-404C (four 4" woofers 125w/500w) for center channel. All the other specs of the 2 speakers are the same. Have a subwoofer. My used 17-yr-old Pioneer VSX-47TX Elite receiver puts out 130 watts per channel continuous at 8 ohms which is what the Klipschs are. 1. For my 10 1/2 foot listening distance, would the 504Cs sound better or would they be overkill? 2. Would a newbie notice the sound difference between the two? If so, how would they sound different? 3. Since my receiver's maximum power is 130w, is it correct that the power capability of the 504Cs above 130w could not be used and that the 504Cs would therefore be a waste? Any help would be appreciated.