I am going to start with bass traps first and see how that goes. While I am working on it, I will look at 1st reflections too and maybe put some make-shift things up to see how much "better" it sounds. If it is marginal, then I will probably skip them since I like the idea (so does my wife) of the nice clean look without visible panels on the walls. Definitely do not diffuse or absorb around the QS speakers. There was a discussion going on in an acoustical treatments thread over at AVS about this too.
I know that SirQuack had 1st reflection point panels in his theater to go with his front bass traps and it sounded great. Not sure which was the best bang for the buck so to speak, but if you have some absorption materials in the room, you might be fine.
