My first smartphone was an iPhone. I decided to get a new phone, due to my phone being stolen. I was debating between the Galaxy s4 or the iPhone 5, and I chose the Galaxy s4. I was dreading my decision after a week or so. I recently got a new phone, iPhone 5s, and I love it 100x more than ever.
Honestly, if you like the iPhone, you most likely won't like the android. But, this is just my opinion!