It's hard for me to nail down, it just feels clunky to me. It shouldn't require as many buttons as are on there, and it's not entirely clear to me that the excess buttons provide anything more then redundancy.
My friend has also mentioned the visibility in less then optimal lighting, so I'm also interested in the newer generation eInk, although if someone can confirm newer Sony Readers have this, then that is less of an issue. Page redraw could be faster, but same is the same situation as the lighting.
If it comes down to nothing new being out in the next month so I probably will give in and just get the Sony and deal with it.