[12fro]

That might be part of it. Myself I value most the differences in hardware: I used a Samsung Galaxy Note at first for similar tasks and loved it, using Zotfile and Dropsync for keeping PDFs on the tablet. I travel a lot, and I couldn't count on it getting through a day of mixed use. In the end, the excellent power management of the iPad was a big advantage.

Similarly, I made the switch to a Macbook Pro after a bad day in 2011 in which I was first unable to connect my (Linux) laptop to a projector when visiting an institute to give a talk, and then unable to Skype in to a conference call. It was a bad morning, away from base, so I went to the Apple shop at lunchtime. I value the Linux box I use at work, and enjoy working with its tools, but easy collaboration is also important to me.