I went for the Demo and took my LX54 with me for testing purposes. I tested 3 films, Pirates of the Caribbean on Stranger Tides, Lord of the Rings, Empire Strikes back (Cloud City), Avatar for 3D and Signs on DVD.
I sat there for 2 hours playing with the different settings and sharpness levels to find the optimum picture and like David mentioned I found adjusting settings a real benefit. I should mention at this point, that I tested these players on both a projector and 55inch TV.
I found the colours were rich, the blacks, deep and inky with motion being smooth. The 3D playback from the Oppo was flawless and I certainly did not pick up on any Judder. The LX54 still performed admirably on the projector, but you could tell something was lacking and motion certainly was not as flawless as you would expect. Picture quality was more or less identical, until I started tweaking the settings on the Oppo, adjusting its sharpness gave it a real boost on the projector but not so noticeable on the TV. As for Audio, there was no difference to my ears, this is to be expected as I was passing the signal to an AV for decoding, however this player does possess a superior on board decoding system to that of the LX54 and should you wish it to decode video and sound, then this will not let you down
When it comes to DVD upscaling, it flattened the LX54 in every way, the upscaling was sublime. In this instance I preferred the upscaling on the TV as opposed to the projector, however the results on the projector were impressive also. The image was sharper and crisper than the LX54, whose upscale ability is good, but nothing compared to this!
My final conclusion is, if you want a high end player to go with your high end home cinema system, then this is it. It has superior video processing ability and presents a thoroughly enjoyable experience, granted this does not have some of the bells and whistles of say, the S790, but it is a cut above. As a side note, the player loads up quickly and you are able to start watching a film in roughly 15 seconds from power up. Superb!