i have a mits 3000 connected via HDMI to my 360.

here are my observations regarding reference levels...

standard produces the picture with the most black level detail...however it's not very 'contrasty'

expanded produces a high contrast image at the expense of shadow detail.

both are with the PJ at default 0 and 0 for brightness/contrast.

so the question is...what is technically correct?

i have heard stories by owners of different brands experiencing the same issues, but some have found the elusive magic setting to have both a high contrast image with no loss of blacks.