Big changes yesterday -- I replaced my Boulder 866 with the Momentum 250 MxV and the Bartok APEX. I loved the 866, but caught the upgrade fever at CAF. The new system is starting to settle and burn in, but I'm already really happy with how the sound has improved.
I rely mostly on playback of redbook CDs using the Pro-Ject CD Box RS2 T, and occasionally streaming direct from phones, etc. Still no issues with the Pro-Ject; I was lucky I guess.
As the pics suggest, my room is not dedicated to audio. Far from it. Thus far, room treatments are limited to carpet, plants, paintings, blinds, furniture and bodies.