you need to run the set at least 50 hrs, TURN on Auto for the power saver.
This lets the backlight give you the best of both worlds bright and black. You will never even see it do it.
Its like having the backlight at 10 on a bright pix and 0 on a dark one automaticaly.
The back light rides the video level in a perfect way that you never see.
This would give a real 50000 to 1 contrast I guess. But turning down the back light does the same thing but kills the brightness.Lets say there is one word on the screen like max. In auto mode the screen will be almost completle dark. It has to be total darkness in the room to see any light at all other than the word max, and that is almost non exesint. Darker that anything I have ever seen in the flat world,,,sorry plasma you have been done in,in the black area. well at least the panny plasma I had for a while.even in parical dark pixs it works very well.
Out of 3 sets and none had any issue after 50 hrs.
All had a little of clouding and flashlight when 0 hrs.
Another thing when you run a 4x3 pix the flashlight will be worse than if you have been using 16x9 because the pixels are working in that area. In 4x3 they are off. But after some hrs they are gone.
YOU will just not find a better pannel out there, except well maybe the new sony.,,,,,,,,, as the xbr4,s I just wonder what in the world sony was thinking on backlight control.
Blacks are much better on the samsung, And sharp man the backlight is all over the place and very noticable.