* Pros:

* Great e-ink display with 300 ppi resolution

* Waterproof

* Long battery life

* Wide selection of books available

* Affordable price

* Cons:

* Limited storage capacity (8 GB or 32 GB)

* No audio output

Kobo Clara 2E

* Pros:

* Excellent e-ink display with 300 ppi resolution

* Waterproof

* Long battery life

* Wide selection of books available

* microSD card slot for expandable storage

* Audio output

* Cons:

* Smaller screen size (6 inches)

* More expensive than the Kindle Paperwhite

Barnes & Noble Nook GlowLight 4

* Pros:

* Good e-ink display with 212 ppi resolution

* Waterproof

* Long battery life

* Wide selection of books available

* MicroSD card slot for expandable storage

* Audio output

* Can be used as an audiobook player

* Cons:

* Smaller screen size (6 inches)

* More expensive than the Kindle Paperwhite and Kobo Clara 2E

PocketBook Era

* Pros:

* Excellent e-ink display with 300 ppi resolution

* Waterproof

* Long battery life

* Wide selection of books available

* microSD card slot for expandable storage

* Audio output

* Supports multiple file formats

* Cons:

* Most expensive option

* Heavier than other e-readers

Ultimately, the best e-reader for you depends on your individual needs and preferences. If you're looking for a budget-friendly option with a great display and long battery life, the Amazon Kindle Paperwhite is a great choice. If you're looking for a more versatile e-reader with expandable storage and audio output, the Kobo Clara 2E or Barnes & Noble Nook GlowLight 4 are both great options. And if you're looking for the best possible e-ink display and don't mind spending a little more money, the PocketBook Era is the best choice.