So far I'm very impressed with the 600. True, the screen is not as crisp as the 505, and it does have more glare, but it is very readable and the glare can be easily managed.

One thing I noticed is how fast it is. In side-by-side testing, a PDF file took the 505 7 seconds to turn a page whereas the 600 turned the same page in the same PDF file in less than a second.

ePUB books still do not display in full justification, at least not the one book I've tried so far.

More later...