The main reason I stick with Amazon is that it has the best integration with my local library, which is where I get 90% of my books. Like most libraries, they are OverDrive based.

I can check out a book from the library on my phone and have it appear wirelessly on my Kindle moments later. Last I checked all non-Kindle devices require you to basically download an .epub file onto your computer and then sideload it with a cable to check out a library book, which is too much hassle for something I do several times a week.

I've had a pretty good experience with the Kobo Overdrive integration.

My process for checking out books on a Kobo is:

  - check out book on Libby app

  - go to Kobo

  - hit the sync button.

The last time I tried to check out a book for Amazon (admittedly a while ago) it was

  - check out book on Libby app

  - get redirected to Amazon & hit "borrow" <-- just a bit of extra friction

  - go to Kindle

  - hit the sync button

Well, that's sure an improvement from the last time I looked into this! Thank you, I'll check out Kobo.