An iPad can pretty much do everything you listed down better than a Nook or a Kindle. But i’ve never used an Android tablet or smartphone even so I cannot comment on that one for you. It’s best to consult an Android user for opinions too. All I have is my iPhone and my iPad. :3 I would recommend the iPad to you. ^^ It fits your description perfectly, but I don’t know, its the only thing I own out of all those that you’ve mentioned, so I guess I can’t really give you an accurate comparison or something. ^^