It is pretty sweet
Definitely not suffering the pains of disillusionment as I did with the 700. If I can stop working for a few hours, I'm going to spend at least two hours reading on it so I can see how my eyes feel.
My DX display is darker than my 505. It's a very small difference, but it's darker. I checked with a light meter, just as I did with the Kindle 2 (now replaced by the DX).
We're still waiting on desktop software 3.0 to see how that notes export to the desktop works
. Thurs or Friday, according to Sony.