YMMV but I dislike referencing through digital formats like pdf. With a hardcopy I can bookmark various pages and very easily thumb through / reference it. Sear

YMMV but I dislike referencing through digital formats like pdf. With a hardcopy I can bookmark various pages and very easily thumb through / reference it. Searching for exact text is slow though, so I try to acquire both types if I get a hardcopy. For my e-ink tablet/reader, I use an onyx boox and a kobo.