The thing about the OMDs is that it is very easy to tune the presence and treble regions to the room with absorptive panels, which are available now in attractive colors and patterns. I have a pair of tall narrow windows behind my OMDs and I adjust brightness by opening or closing the windows' pleated shades and/or curtains. You can also increase image speificity by putting a panel centered on the wall behind and between the speakers, and also on the side walls to reduce sidewall reflective bounce. Each panel you put up, however, generally diminishes the treble energy and at some point you have to stop, or use smaller panels.
Also, they generally sound better facing forward than angled inward.
Also, they generally sound better facing forward than angled inward.

