When I first got my M80s I had them positioned on the long wall and sat only about 8' away. I tried everything I could think of to make them sound good to me, it never worked. They were just too much in your face forward. Once I rearranged the speakers to the short wall and had some distance between me and the 80s everything sounded great.
In that size room there is no way in the world I would recommend M80s in such a small room. At most I would look at the M60s and would really recommend M22 and a sub of your choosing.
