I had previously (5 years) an HD ready projector, Hitachi PJ TX100.
With this I was very satisfied, but when recording of Blu-ray (PS3) he has scaled down the resolution. I looked at div. Beamer, and their image.
Optoma HD 20: very similar features, but the picture does not have the same brilliance, depth of focus, not as crisp.
Mitsubishi HC 6800: From her picture, I would say there is no difference for the Sanyo, but the Mitsubishi was too expensive for me!
As I said I am a connoisseur of the image (not a technician) and Sanyo won me over! At 007 Casino Royale, Bond climbs near the beginning a crane up, which pivots the viewer back, the picture is so awesome that it looks almost as if the crane from the screen come out (almost 3D).
Although my wife likes the "black, square box" not, but that's with the women! Smile!
But the picture quality is even impressed!