I usually get between 2.5 - 4 hours of screen on time. But I run a lot of things with the screen off that drains the battery like streaming music or wifi hotspot.
I normally get like 3-3.5 on LTE (Verizon). Right now I'm @ 53% with 1.5 hrs screen on. But I have 1 bar of LTE, half an hour of hot spot and I've made some phone calls too. I'm good with that, especially considering my GNex would be dead after an hour. Bear in mind, I'll probably charge it up @ 15% so I probably could get 4 hours if I let it die completely.