The Pyros because seemed the right choice. I-link and thus long persevere, displaying all kinds of file formats and the price seemed to be okay.
Now he came and the disillusionment followed immediately.
Most of my documents consist of PDFs. Although these are also displayed, but mostly so small that you can hardly see anything (if the font size is set to XL). Mir has not been able to scroll a PDF, so always got stuck on page 1.
Then I converted the PDFs with Calibra in epub. Again, the result was more than sobering. The characters were gone (in mathematical documents), the converted PDFs (now ePubs) could not also be zoomed (which has to do with the fact that the original PDF was described small - it appears to be 100% content, but you can not then hereinzommen) and the converted PDFs of my newspaper subscriptions could not be opened.
Better to invest a few more euros, is having trouble with battery life, but get in a tablet everything appears reasonable.
So a Dino really only works with good old Belleristik.