@gmdodd , In regards to room treatment there are really two issues, evening out bass response and helping the system produce the best image.
Bass traps are worthless. If you have a bad room for bass the only two options that really work are multiple subwoofers and digital room control. If you do not want to get involved with all this stuff the best solution is to move your listening position backwards or forwards until you find the bass acceptable by ear. You might only have to move it a foot or two.
Improving your image and dampening out artifacts like sibilance requires muting first reflection points throughout the room. This can be done with expensive panels from various companies but also just as effective is really cheap 4" acoustic foam tile. You could probably treat the whole room for less than $100.00! That is what I use but in my case the speakers hide the tile. As for whether or not the foam tile are aesthetically acceptable is a matter of personal taste.