I have iPhone 5 and Samsung Galaxy SIII and both are excellent. iOS remains smoother and easier to use, and the apps are almost always more polished. Android has more flexibility and you get a bigger screen. Both are absolutely great phones …

BlackBerry is not something people pay for anymore - hence their plummeting share.

You might also want to check out the Nokia Lumia 920. Windows Phone is a long shot better than old Windows Mobile.