if you have symmetrical corners facing the sectional get these (below). they will fill the room, and your whole house actually, with beautiful sound. they're big but would be out of the way in the corners. these guys on here are mostly old and while many have lots of experience they tend to get a narrow focus and ignore what you actually asked which is about a system for your family room. nobody in there right mind would put gik all over the walls and ceiling of a public family room. if your wife agreed to that id be very surprised. moreover, if you want that id be very surprised.
this: