It's hugely a personal preference decision for most. I have decided that Samsung (aka Wallet Vacuum Corporation) has the best balance of hardware specs, design, and usefullness. I have had two people close to me decide to leave the Apple camp after using a GS4 for the first time. One of those guys is my Brother. He was convinced Apple was the be all, end all choice in mobile smart devices. He needed to get a new device for work and was dead set on a new 5s to demote his 4s to work duty and keep the 5s for personal use. He surprised the hell out of me when he chose the GS4 instead. He hasn't stopped complimenting it since he got it. My other close friend/coworker was the same story, 4s to GS4, dumped iTunes afterwards, won't go back to iPrison.
Then there is this.
Historically you see very few Gorilla Glass equipped Sammy's with broken screens, but, you can't go more that a day without seeing some clown with broken back glass or front glass on the iPhone. The shitty part with AL bodies is they aren't forgiving and one a corner is dented, get ready to use a Dremel to fit the replacement glass back in. I know of one person with a GS4 that broke his display glass from a normal drop and he said it was a fluke angle in which it hit and he caused it by trying to catch it.
Some of my personal favorite features on Galaxy devices:
* 20 dollar adapter adds host usb on the GS3, GS4, Both Notes, and many of their tablets. That means I can access information on thumb drives and digital cameras away from home on vacation, etc. Access to keyboard and mice which turns your phone into a mini computer.
* On device file manager to move files around, rename, transfer, etc.
* On device photo editing (◊1000 on the Note3 with Autodesk Sketchbook)
* On device video trimming and editing.
* Memory expansion.
* Battery life and battery swaps.
* Screen size, oh man, screen size.
* MicroUSB ports, not proprietary.
Apple is decent stuff, I just don't view it as useful with its limited capabilites away from iTunes and a computer.