I was very happy with my GNex - typically, I start itching for something new around the 1yr mark, but the GNex kept me satisfied right up until the last couple, even through a 1 week dalliance with a Galaxy S3. Jelly Bean really pumped new life into the phone.
Last week, though, a Moto X - clad in navy blue and silver - arrived at my doorstep and I knew my relationship with the GNex was over. The GNex got wiped clean & had the factory image re-applied yesterday.
In RE: the camera, it's distinctly mediocre. Better than the Galaxy Nexus, which is not exactly high praise, but definitely not as good as the iPhone 5S that one of my coworkers has. I don't care all that much - my digital SLR hangs from my shoulder many days, and after nearly 6 years of smartphones, it's a rare day when I snap an image with one that I'll care about a week later.