I really like iPhone/iPad (still use them). I happen to like this little Android guy too. The S4 is a great phone, I highly recommend it. Plus, it comes with the Accidental Damage from Handling warranty...2x Free screen or water damage repairs, so that helps. Right now, I'm on the waiting list for a screen repair, 70th on the list, so I don't know how useful that repair really is...but it is free so I'll shut up.
I love the customizability of the phone, but I do miss some iPhone features, like iTunes and especially the App Store. There is so much rubbish on the Play store (also $ fixed at R7.99, so score).
Just get the S4 and then we can bitch about it together in a year's time.