Best pdf reader?

Question

Electronic books

Good day to all, help me choose a book according to the following parameters:
1. Normal reading of pdf format
2. Preferably reading djvu
3. Reading popular formats
4. Mobility
5. Preferably backlight
6. Preferably mobility
I also consider tablets.

Answer 1

Take a tablet with a good 10-inch screen (IPS or AMOLED and at least FHD resolution). Of course, the eyes get tired more than from electronic ink, but the convenience and speed of work decide. On any reader with E-Ink, reading PDF is a torment due to problems with scaling (I tried it on Sony PRS-T2, Onyx Maxwell and Kindle Paperwhite - everything is rotten).

Answer 2

Joining matperez
Take your typical PDF and open it on a regular monitor or laptop. Reduce to the smallest comfortable readable size. Measure the width with a ruler. Think about the diagonal. If more than 6" - this is not a reader, but a tablet or a laptop-transformer.
Then - the same PDF to a microSD card or USB flash drive - and to a large store. Ask the consultant boy to show how it is read on a mass-dimensional prototype. Draw conclusions , buy at once or in the Internet shop.