I definitely prefer e-reader. Bigger screen, no distractions or notifications, and e-ink means weeks per change and no eye strain. I currently have a Kindle Oasis, but I'll probably trade it in for something else in the future to escape Amazon's ecosystem. Until then, I even save longer articles to Pocket and use p2k (whatever its successor is called now) to send it to my Kindle and read later. I think Pocket's still going away too, so I'll have to switch to something else eventually...