It's pretty rare that I read an actual book, but when I do I prefer to do it on my phone. It just works better for me. My wife will have an audio book, physical book, and a book on her Kindle all going at the same time. I don't know how she keeps them all straight!
Sort: Trending
If you use Audible and a Kindle, Amazon actually syncs ebook and audio book up for you, making it easy to go back and forth. Of course that wouldn't help much for physical books, though.