[Rizla]

If reading pdf files is a priority, you should consider an open Android device like the Onyx or the Boyue. With these, you can install a large number of off the shelf pdf reader softwares which will allow you to better utilize your hardware to read a pdf on a small screen. This is a better solution than attempting to convert a pdf to an epub, etc. The same applies with reading real ebook formats and using things like Toc. Basically no out of the box user interface such as you find on a Kindle or a Kobo can compete with abilities of the many apps available for Android. Personally Id look at the Boyue but the Onyx has 6.8 inch screen which might be handy. But you have to read pdfs in landscape so its not a huge deal. When reading pdf files on a 6 inch screen, the key is reading in landscape and cropping. I use Orion reader for pdf files and Alreader for epubs.