Do I need an iPad Air 2 if I have an iPhone 6S Plus on pre-order? I already have a iPhone 6 Plus right now (I upgrade every year) but with the big phone screen, would an iPad benefit me in anyway? I have tried out the new multitasking and it seems really cool, but I am not sure if I truly need it, I don't want to waste money on it. I also have a 12 inch MacBook for reference. Thoughts?