Basically everything you have stated!! I have the sony av running with a PS3 and using it for the blu ray as well at the moment but will be moving the sony s370 into the room at some point soon.
I also have the xbox 360 elite for gaming / dvds and want to get the best out of all.
If you can describe how you got the out put Dolby pro logic 11 / Dolby digital / dts and lpcm that would be great.
It would be awesome if you can tell me how to get the screen to tell you its output......and yep I'll give you time to remember!! I know how time consuming gadgets can be.