[Tloewald]

I pick Amazon most of the time simply because I can read Kindle books on more devices. This isn't because of any good thing Amazon has done but rather its successful pursuit of snticompeititive policies:

1. Kindles won't read non kindle ebooks. (The kindle fire might if you know how, but it's not easy)

2. iPad will read all competiting ebooks.

3. Amazon's policies coerce publishers to keep prices low, in particular generating a revenue poverty trap for publishing books at prices between $10 and $20.

[Karunamon]

>1. Kindles won't read non kindle ebooks.

Every Kindle ever sold will read PDFs, and with software like Calibre, you can convert every modern ebook format to it.

[arjunnarayan]

Actually the practical format you want is MOBI, which Calibre will also convert to. It's a little annoying that everyone else has settled on EPUB, and Kindle doesn't read EPUB. But Calibre will seamlessly convert EPUBs to MOBIs and MOBIs to EPUBs, so the end result is all non-DRMed books can be read on all devices with almost no effort.

[Tloewald]

Not DRMed epubs.