Down the road I want to step up to 7.2. I am very limited on space and the couch can only be moved forward maybe a foot. Looking at the 600m's, 600 m ii's, or 502s ii's. I am really liking what I read on the 600m ii's. But they will be right behind the couch. Would the 502s ii's be better in this situation. I am heading towards 2 atmos speakers next year. Let me know your thoughts please.