[Turing_Machine]

PDFs are horrible when it comes to different screen sizes, though. I mean, horrible to the point of near unusablility.

The ebook formats (both EPUB and Kindle) work very well indeed on devices ranging from a small phone screen to a large desktop monitor. They're not "inferior" to PDF in the slightest in that respect.

There are still niches where PDF wins, but that's certainly not the case for casual fiction.

[tenfingers]

I don't care so much about the format. I never used epub because nothing I ever used came in epub. I usually get PDFs along with books I buy (which is ironic, but appreciated), but never epub so far.

My main complaint is that these readers come with DRM. As far as the format is concerned, I would be fine with almost anything.