I have setup a temporary 7.1 setup in my medium sized room of 16x14. The QS8s are on the sides, I have M3s about 5.5 feet behind the listening area. I have not noticed a significant improvement. I have about 2 in 50 movies that actually use 6.1. I have setup the 7.1 speakers for my LOTR day on saturday (that uses DTS-ES 6.1). After that , I will be taking the M3's upstairs I think.
7.1 isn't worth it in my room, I listening to Gladiator in DTS-ES last night a bit, I didn't notice a more enveloping experience than what the QS8s gave me. The QS8's are amazing.
-Hutz
