I'm looking for the same device, why not a eee Note Ea800?
-Low price (256 € in Italy)
-Support for pdf and ePub (sadly i don't know how good, for now i watch only some Taiwan sample and none of them show some tech paper)
-great for note
his only possible drawback (for what i know) is the lcd non backlit display, i cannot find a real comparison with pearl or similar
you can find some info here
http://www.asus.com/product.aspx?P_ID=IrZFXz2AcdRvL7L6
and a lot of video (not pdf) here
http://www.jessebandersen.com/search...s%20Eee%20Note