Until recently, I’ve been using an iPad 2 as my sole tablet. I like the iPad. I use it for four main functions: writing, browsing, video and reading. The 10-inch size is perfect for the first three, but it was a bit too large for the last. Because I also use my tablet for scheduling and task management, I tended to take it with me to networking events and client meetings. I always felt a bit silly pulling out such a large device to schedule a meeting or jot a quick note. About a week ago, I bought a Nexus 7 tablet,...