My husband went to the Atlanta Sony style store today to see if the screen on the 600 would be acceptable. He bought the 700 last spring, but was disappointed in the glare and contrast. I ended up taking it over, since I mainly read at night and love the convenience of the built in light and the touch screen (I also have a Cybook).
Anyway, The contrast on 600 really is a lot better than the 700, but the background is not quite as light and crisp as the Cybook. The 600 does have a little bit more glare than the Cybook, but it's not excessive.
Anyway, here are my pictures. It's really hard to take accurate pictures of the glare and/or lack. I can also try taking pictures of a pdf document in daylight if anyone is interested.
supersized pictures available here:
http://www.dakiri.com/Other/sony-600...31440976_Br2TV