So here's my story:
I had a brand new 955df. I thought that it was too eye straining and out of focus, overly bright (meaning I couldn't turn the brightness down to match the non-voltage area of the screen's black). So I called the tech support, they said they will replace with refurbished unit on site. I waited a week, the guy came this morning. He brought a refurbished 955df (older model, the one with sliding controls, and no highlight feature). Same story though. The tube looks same, can't match the non-voltage blackness. I called tech support they said call customer service tomorrow, see what could be done. So for the hell of it, I walk to best buy tonight, buy 19 inch MAG 986fs (not even flat tube - just your regular cheap crt), I plug it in, and voila - the text is sharp, the blackness can be matched to non-voltage area, the white is white and not gray!!! And that's all even without enhancing with nvidia's controls...
I sure hope that Samsung will say tomorrow, that they will take the computer back and just give me money that I paid for it.
Will keep you updated...