And, can't you just see this discussion devolving into an Android vs. iOS spat? The truth, I think, is that both mobile operating systems are great and offer a lot to users. Windows' mobile OS seems to be growing, too.
I've used both Android and iOS and like them both very well. The primary advantage of Android, I think, is that you've got a lot of hardware from which to choose. Meanwhile, iOS features the best Apps store on the planet, and I say that because high quality mobile apps tend to hit iOS first.
Still, it's great that we users have some choices, isn't it? An Apple iPad is always a good choice, but you may find some hardware running Android that you like. Pick what you like and don't look back.