Well after all the reading and recommendations of people on moving to a 7.1 speaker configuration I have decided to purchase the two additional speakers that are needed. My question for everybody is about the placement of the rear two speakers. I have a couch that sets right next to the wall with very little room behind it for a speaker. I know that the recommendation is to have the two rear a certain distance behind your sitting position but I do not have enough room for that. If my speakers are only about 6" behind the sitting position will I still notice a huge difference with a 7.1 configuration? If anybody has a good recommendation on how they handled this themselves I would like to hear how you resolved this issue.