thanks SO, SO much everyone. and picture was perfect. Exactly the same as my room - even down to being open to our kitchens. Of course all your equipment is a bit scaled up from mine (I hope your foundation is bolted down) but geometry is same and I'm glad to hear that you're getting good results...

~ you have the QS8's about 12" from side walls? is that right? Also, what does the person sitting in your side chair hear? My wife would be in that general area - does the down-woofer of the QS8 bother/deafen the person in that area when system's been optimized for the center of couch a good eight feet away?