Now of course this review is biased as I've never owned an Android phone.
However, moving from Blackberry to iPhone was a HUGE step forward. I have been using iPhones for several years now and don't foresee a switch to another platform.
The Android marketing out there did pique my interest, I went so far as to buy an Android tablet. And that's when I became even more pleased with Apple.
Perhaps it's just too big of a learning curve after using iOS for so long, but the Android OS was not very intuitive and I find it harder to use my tablet than my phone...