[Quoth]

Kobo Libra H2O. Two perfectly working Kindle PW3 have been replaced in use by the Kobo Libra in our family.
You can add dictionaries and by default has many languages.
Easily stores about 6,000 ebooks, 40 years of reading for many people.
Kobo is best for management with Calibre. Calibre plugins and conversions allow Amazon ebooks to be read on it.
Decent battery life.
Collections, Series etc can be managed by Calibre (Kindle terrible for Series and awkward for Collections).

I don't often use the front light, but it's fine and even on our two examples. We have never bought books from Kobo, but from Amazon and Smashwords with free content from the library here and many other public domain content sites. I also create "books" for it using calibre instead of paper printouts and also proofread & annotate books on it.