Ditto the last post. Any of the e-ink readers should be good. Light differences seem to affect people that read in total darkness (some find they can't get Kobo Glo dim enough for them) but aside from that I would look at some in store if you can and see which you like. Kobo does have more installed fonts and allows you to sideload your own without rooting or anything if you're picky that way.
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