I have a venerable, still well functioning Kobo Glo, which I stuff full of AO3 epubs before holidays, love reading on while traveling, and then don't really use when I'm home. Instead, I ruin my eyes by reading for hours per day on my phone.
I have done some research on what's out there these days, and it looks like finally, with the slow advent of colour e-ink displays, there's once again some movement in the non-Kindle market. I'm not into Amazon, so Kindles are not an option for me.
Onyx looks great, with a huge range of devices (I'm so tempted by the Palma!). Kobo has some new contenders with good reviews, too. The Remarkable looks fantastic, if not great for the purposes of reading, and I really like the promise of the Dasung monitor screens.
I also like laptops with e-ink screens, but those seem more like gimmicks which are going to break super fast.
Unfortunately, apart from what can be gathered in a few hours of research on youtube and review sites specialising on e-ink devices (like goodereader.com), I am lacking reports of experience from people who would use the device like I would - and I'm thinking I might find you on this group!
My usecase 1 - 95% of usage: the device should have a browser that is quick enough that I can browse the AO3 comfortably, to then download epubs to read (offline).
My usecase 2 - 5% of usage: I can imagine that if I had a faster browser, I would use the device for reading news, too.
Other than that, the device should be epub compatible so I can keep my existing (fic) library - I don't mind only reading my couple handful of Kobo books on my old Kobo Glo.
Ideally, it should have the possibility of encryption.
It really should be as environmentally low impact as possible. I have not seen any of the review sites or videos talk about environmental impact. It's too bad that we don't get shown an energy efficiency label with ebooks or other handhelds, it would make life easier. I realise that I could have the lowest environmental impact if I kept reading on my old Kobo, BUT browsing on it is so slow that I am almost guaranteed to just switch to my phone.
I would be super grateful for any advice!