As an iPhone owner, i can only comment on the iPhone. I am very very pleased with it and already think that I will own iPhones until it becomes outdated. I love how simply it syncs my music from itunes, my ical, all my contacts and email addresses with my laptop and how great the email and safari browser are. I highly recommend them to everyone.
The autocorrect feature is incredible too. People think that the touch screen will be difficult to type with accurately, but i literally hardly ever type a word correctly and let the autocorrect do all the work. Apple actually will tell you the way to type fastest is not to work on accuracy, but on trusting the autocorrect. I type far faster on it than i do verizon's voyager's keypad.