I want an e reader, like a Kindle, but I have a serious toxic reaction to really closed systems - like the Kindle system.
Ironically, I do want to use the Kindle reader software, as it allows me to share library with my wife. But I also want access to other library systems or just upload my own stuff (and yes, I know that you can upload your own stuff in some formats to a Kindle).
Much more open (and geeky) than Kindle and can read lots of formats. Calibre is popular software to manage books and uploads https://calibre-ebook.com/download Though the standard Kobo bookstore is good, even if not quite Amazon size.
I actually think the fonts are nicer than the Kindle as you have more control and can set the boldness.
You can even buy Kobo on the high street at Argos http://www.argos.co.uk/search/kobo/ I have the (now reduced) basic Aura and it’s perfectly fine. The more expensive models have bigger and sharper screens. The new £150 model looks very nice, I’d probably buy that if I was buying now.
Part of the reason I’m considering an E-reader is that a book I plan to buy soon is (1) £10 on Kindle, £25 in hardback, and (2) just too fucking big to carry easily or read while mobile. It doesn’t take too many of those to make a Kindle worthwhile.