The One is too big for my taste. Besides, for a huge reader for indoor use my H2O seems to handle my needs for now.
The Edition 2, in the other hand offers a few new thinks compared with my Aura 6''. But not so much. Same dpi, same resolution, same internal store size. I read usually epub books on my Aura so I don't really care for the existence of a external card slot. The overdrive feature may be useless on my country.
I need a 6'' reader with carta display and high dpi. Those things I missing on my Aura 6''.
After a lot of thoughts I came up ordering a Glo HD.