Outlier,
You got a very good system set up. I am sure you must be thoroughly enjoying it. I read your thread on the RWA 30.2. I think maybe your speakers demand a lot more power, and so that amp did not do it for you.
Also you have a really big room for your gear. Lucky you. But do you put a curtain or some "absorber" in front of that big window when you listen to your setup? I found that a reflective surface often hinders the stereo imaging of the system. In my older room this was a big issue. There was a TV between the 2 speakers. A fellow audiogoner suggested me to put a blanket on the screen. And boy, that really made a lot of difference. In my current setup too, I have a window between the 2 speakers. But I have a thick curtain on them when I listen to my music. Makes a whole lot of difference for me.