I’ve had a Kindle Paperwhite in the past and now I have a Kobo Clara 2E (that’s the BW one).

I prefer the Clara because:

• it is not an Amazon product, and I even bought it at a local retailer
• it works with epub files for books — even if Kobos have their own kepub file extension, calibre has plugins that deal with that
• setting up calibre-web on my home server and having the Clara connect to it was very simple

They both have water resistance and warm light. The Paperwhite’s screen is a bit bigger, but the difference is not monumental.

In the end, they are similar enough both in terms of specs and price that depending on your use case you will be fine with either one, but if anything I mentioned above is an important factor to you then I hope this was helpful :)