The most useful information from all this is experimentation...move 'em around. And moving your listening spot is silly, unless it's in a really weird place (like your head is resting against the back wall, or you're sitting on a pile a broken glass)...my REL is in a corner behind a speaker and it sounds great from my specific "dialed in" (the gear, not my couch) listening spot and not great anywhere else (standing waves, room frequency nodes, blockage by my huge personal bodyguards, etc.) because that's the way bass is, and that's OK by me.
