First little disappointment:
Was watching BD on PS3, and have decided to switch to MCE.
First will describe the connectivity:
PS3 is connected via HDMI
MCE connected via HDMI (DVI-to-HDMI cable) video wise and coax for sound.
Yamaha somehow combines it, without my intelligence
After switching to MCE - horrible pixelation

so I had to switch PS3 off to restore PQ.
hmmm, I am a noob in this area, so will investigate.
Video is set to passthru, no upscaling, or so I think.
PQ is the same good as direct from MCE or from PS3.
Sound is a bit flat compare to Sony STR-940 using MCE, but I have spent some time adjusting it, so will have to repeat.
Uncompressed PCM from PS3 is really good - crisp and vibrant, but I want to hear DTS-Master.