I’ve posted several times on here recommending the N5. Owned mine over a year having switched from 4 years of iOS.
Can’t stand Android out of the box. IMO it still looks and feels sh1t. But after slapping on a third party launcher and custom icon pack it’s easy to see how much one can tweak the look and feel. No need to root – but that’s always an option if you want to go real deep. Not for me though.
Native Chrome browser is excellent. I constantly have 90+ tabs and loads of other apps open and the browser/device still runs as quickly and and fluidly as day one.
Camera is sh1t though. Very hit and miss. Some shots look really good yet others look the complete opposite. Video can be decent.
Can’t see myself upgrading to an N6 as I don’t see the point in having a bigger screen – just makes it harder to use one handed.