Which e-reader is best for note-taking and annotation?

Among the models here, the Kobo Libra Colour is the one reviewers point to for annotation, since it supports an optional stylus and pairs note-taking with a 7-inch color screen and physical page-turn buttons. Verified-purchase reviewers on Best Buy and Target who annotate praise its light weight, though some flag a slight page-turn lag and duller-than-expected colors.