Is a Kindle or a Kobo better for borrowing library books?

Reviewers consistently favor Kobo for library reading because Kobo integrates OverDrive/Libby borrowing directly and natively supports EPUB, the format most libraries use. Kindles can read library books through Amazon's Libby integration in the US but funnel you through the Amazon store, and they historically have not handled raw EPUB without conversion. If frictionless library borrowing and open formats are your priority, the Kobo Clara BW is the value pick that communities point to.