I’m looking for an eReader that doesn’t lock me into a particular ecosystem or format. Ideally I came just copy files over to it and have them work.
Other than that, small physical dimensions and a backlight would be great!
It’s been years since I had one but in the market again and I’m not sure the current state of things. My old one was a Kobo and took files just fine.
I have owned many e-readers over the years. I have a Kobo Clara HD right now and really like it. I use Calibre ebook management software to load books on it. You can jailbreak anything using calibre’s built-in de-drm features.