The N4 is a great phone but it's hard to like it when the iPhone does everything so nice and you're used to it. This is now my 3rd attempt (and best attempt) at switching to Android and I just couldn't part with the amazing battery life, camera, and apps of the iPhone. I'll probably get the next Nexus phone and try it again, only to revert back to the iPhone... but oh well, it's fun and I enjoy it.
There is A LOT of room for growth in iOS, and I hope to see that coming soon with Forstall going bye bye. We shall see.