A. Neither. I use iOS, Windows, Blackberry or other.
B. Chrome. It just works.
C. Android. I can have the Chrome browser on it (why choose?)
D. What is the difference?
Whether or not you like either product, they are certainly different products that offer value propositions to a variety of consumers. Maybe they do not need the integrated hardware and software experience Apple offers. Perhaps, they do not need legacy support for documents or gaming capabilities from a Windows PC.
If you like one or the other, or both, tell us. If you feel you don’t need one but prefer the other, again let us know.