V, I'll comment that if you really are going to be doing much DVD-A/SACD with discrete instruments located in the surround channels, even the QS8s won't give you very deep bass by themselves. If this is going to be important to you the use of the ICBM or a player with good bass management to send the bass to your sub is advisable. Otherwise, the QS4s should be fine for your room.

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Enjoy the music, not the equipment.