It comes down to how you plan to use it!
It's easy to get caught up in the price war game and think "hey, it's on sale for a great price, sure, I'll just pick one up" and then end up with devices that really aren't used. As beautifully stated in the article, if you keep in mind what you really want to use the device for, that should guide your decision. I personally have both an iPad, but also get amazing use out of a Windows tablet. Both for different reasons, but they both have great features as already covered in the article. If you want a productive device, look for something with those features. if you want a device that is more for basic web surfing and apps, look for which devices deliver better experiences there.