Probably the best answer is going to be, "whichever sounds the best". I would mount it temporarily in both positions, if possible, and try it one way for a day or 2 then try it the other way of a day or 2.
can't mount it temporarily, no way to just hang it from walls that are almost 9' off the floor to test it. not to mention that one is in the middle of the room. i know it's always whichever sounds the best, i just wanted to get some actual opinions based on the 2 scenerios i put up.
but thanks anyway.