Rlb61, my room is very similar in size to yours except that the wall behind the listening position is only 3" tall. Behind that is my family room and kitchen. I use monitors and will adding a sub soon. I am in the process of treating my room. So far I added Vicoustic absorption panels on the front wall between my speakers. My next move is to add RealTraps Mondo Traps in the corners for bass trapping. My last move will be to add panels on side walls and ceiling to deal with 1st reflection points.
When I had fatigue it was definitely due to reflections. For me toeing in helped to tame the 1st reflections.
As for what monitor you will get a ton of advice. What's your budget and what kind of sound do you like and what kind of music do you listen to?
When I had fatigue it was definitely due to reflections. For me toeing in helped to tame the 1st reflections.
As for what monitor you will get a ton of advice. What's your budget and what kind of sound do you like and what kind of music do you listen to?