I've owned three generations of the iPhone, now I have the 5, never had any problem with any of them. If your young and love all the Apps, apple does charge for some of them! Both phones equally good, I know people that own Galaxy phones that like them a lot.
I have an iPhone 5 and I like it. It's much smaller than that Galaxy S 4 or whatever it is. iPhone is more customizable and easier to use. You don't have to open multiple files to get to your music or to the Internet.