Only the 900 has the firmware capable of showing ePubs in full justification. I'm partial to full justification because of the many decades I've spent reading printed books which are fully justified. However, the 900 does not have hyphenation, at least as far as I can tell. It would be fairly easy for Sony to incorporate that feature since it comes with a built in dictionary, but I guess it isn't supported in the Adobe DE version used on the 900. Hopefully the next generaton of Sony readers will incorporate some of our wish list items.