Having used an iPhone 4s for 2 years, I upgraded to the Galaxy S4 when my contract was up. A friend was very happy with his S3 and recommended I make the switch. I did my research (my wife was driven nuts by the time I spent on it) and went out and got this baby. It's a seriously good device and I am glad I got it. I installed Nova launcher on the first day along with Quickpic - both as a result of my research. Seriously, iPhone users don't know what they are missing!