Hi
I have 2 x S812s complimenting my Kef Ref 5 speakers. My room is 19 x 21 or 400 sqft. The Rels are brilliant choice for 2 channel which is what I use them for 90% of the time but they will do HT as well. As ssid the independent setting is really useful. What you get in 2 channel is really surprising. They add soundstage, presense and air to the whole listening experience. But for me the addition of 'weight' added to the mid bass on vocals and acoustics is what I reslly liked.
Absolutly no regrets.
Mark