Kobo has some fantastic ereaders (and the premium kobo is cheaper than equivalent on Amazon). They also natively support Pocket and checking out books from your library via Overdrive.
The Kobo Store is really easy to use - plus Overdrive (library ebook software) is natively integrated into Kobo as well.
It’s basically equivalent to Amazon and when you purchase from Kobo (or check out from local library) it shows up automatically when you sync via wifi.
They’ll even price match Amazon (credit for difference in cost +10% bonus) just by filling out a form.