I like how Microsoft is making a giant leap here. But the problem - as mentioned by others - is that operating system. I've always thought a tablet, or just any big touch screen device, is not supposed to be running a full-blown OS. True, iOS on the iPad isn't how many people want it to be. And I'm pretty sure Apple can do a lot more to make it much more powerful than it is now. But so far, they're doing well. Split View and the other new iPad specific features really show how Apple sees tablet computing. Surface Pro 4 and Surface Book look like something we will be hearing of a lot more, and I'm excited about what Microsoft has been up to. But I still prefer the iPad, because of its easy-to-use OS. It's still very mobile, but iOS 9 shows how you can add powerful features, without sacrificing that simple UI.