Other than a slightly larger screen, which gave you another set of icons, a faster processor, and 4G, I couldn't get excited about it so I defected to the dark side, Andriod and bought the GS3. In hindsight, I wish I would have gotten the Note 2, but it was such a big change from the iPhone 4.
I just bought my son the HTC One and he loves it. He comments all the time how much better the Android operating system is than iOS. That is a great phone with a decent battery and awesome camera.