i currently own 5 e-ink readers: sony prs-500, sony prs-350, sony dpt-s1, b&n nook glowlight+, and the kindle oasis (2017 model). i mostly use the oasis, followed by the nook.
the large dpt-s1 is for technical pdfs.
the sony prs-350 i want to keep because it's a small screen and i had wanted to repurpose it as a display screen for displaying all my loyalty cards and bar codes so that they would scan easily by the shops without having to carry a bunch of cards. it would work much better if it was a screen the size of a credit card. but i've never been able to find such a device except for the yota phone (too expensive just for this purpose) and the e-ink cases made for certain specific phones (compatible phone models are limited and they don't work reliably from the reviews).
the sony prs-500 is in the state where the e-ink ghosts so much that it's unreadable. but it's the first mass market e-ink reader released in the u.s. so that makes it collectable for me.
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