My eye is on the Nexus 4. I've had enough of the iPhone - it's price, the staleness of iOS 6 and Apple's assumption that I'll senselessly adopt whatever product they push at me next. My iPhone 4 will not be replaced with an Apple product unless they can produce a £300 iPhone with the same features as the Nexus 4 (as I'm in the UK, 4G LTE is pretty useless to me and why it hikes up the price £300 in the iPhone 5 is beyond me). In addition, I want an OS that is not hamstrung by design. Perhaps we don't quite need the openness of Android, but then again, there must be a nice medium. iOS 6 simply doesn't cut it.
There are those that say the build quality of the Nexus is not as good as the iPhone, and they would be correct - to a point (my iPhone 4's power button is broken, and it seemed to do this mysteriously on its own during the night). Apple is not exactly encouraging us to hold onto our previous models. As these phones only last us about two years, the fact that the iPhone is surrounded by a metal band versus a plastic band matters little.
Google is by no means producing a cheaper product for the betterment of humanity, and there has to be a reason they've released the Nexus in such limited quantities (probably so as not to piss off other manufacturers that are licensing Android and offering phones at significantly higher costs - I'm looking at you, Samsung). However, Apple seems so afraid to piss off investors by lowering their profit margins per phone, that we'll likely not see a phone of the calibre of the Nexus 4 at a similar cost come from Apple (the fact that an unlocked 8GB iPhone 4 costs more than the unlocked 16GB Nexus 4 is laughable).
Give us a reason to want to buy into your B.S., Apple. We've got to waste our hard-earned cash somehow. If we can't save it, we might as well spend it on a suitable iOS device rather than jump ship to Android, a platform Steve Jobs wanted to destroy.