I prefer actual books because you can flip back and forth more easily than in electronic media. There's also something nice about unplugging and just getting into it. I don't use electronic readers at all for multiple reasons but do read on a computer, but that invites distractions and you're no longer into what you're reading.

An added bonus with a physical book is that you know it's going to be on your shelf when you need it and it won't suddenly become unavailable because your permissions were lost, the electronic device died, it became unpublished or a license check failed because a server died or was hacked somewhere. When I buy a book, I bought a book - I didn't rent it. I don't want to be subject to a corporate whim where I suddenly lose it.