Amazon is not closed to non-Amazon content, who told you that myth?
Convert your books. If they have DRM, well, congrats, you were locked in to some platform anyway.
DRM is the only actual lockin, and that is on the content itself, not the reader device.
The Kindle Voyage has the best resolution ATM I think, but past a certain point that doesn't really matter and that point has long been crossed.
The Voyage is kind of expensive though.
- That is a matter of opinion, not everyone is alike. Reading in the dark is not terribly good for your eyes regardless of tablet vs e-ink, and most e-ink ereaders have frontlit models.
- No e-ink ereader really does that very well, for heavy reading of manga/image-laden ebooks, a tablet is advisable. However, I have seen it suggested that only KEPUBs do pinch-to-zoom. I could be totally misremembering though.
The Kindle will zoom in when you hold down on an image and press the magnifying glass. Dragging the picture around to view it all is horrible, because it is slow on the limited RAM that E-Ink ereaders have...
- That is a matter of the font size. Assuming you don't have a miniscule font enforced in the CSS, any device will be perfectly readable. If the book is badly written, that is not the ereader's fault, although certain Android apps can completely override the ebook CSS.
- I have set the refresh to every page on my Kindle, and within an hour or so I stopped noticing it at all. It has been a while, though, so I am not certain, it may have been more or less. I have been happily oblivious for years, thank you for reminding me that it happens at all.
To me, ghosting is far more annoying, I want it to refresh properly every time.