i have made the jump from 720p to 1080p and bought the hd20 to replace my the optoma hd65 i have.
delivery was received this morning so i hastily set it up to my 1080i source.
i took some pics with the projector set to the default reference and some ambient light present.
the reference setting is supposed to be as close to D65 as posssible. i'll test that as a starting point with a colorimeter when night falls.