In a 12x13 room, I have the QS4's. The front speakers are the original Paradigm 7se's (great bass extension), all run thru an HK520 without a subwoofer. All speakers blend quite well and the surround effects (especially DVD's with a good soundfield, like Blade II, or the DTS LOTR:FOTR) are GREAT! As Alan frequently points out, you NEED the QS8 only if you want high volume in a big room. 12x10 is small. If you don't like them, you can always trade up.