Stock apps, disabled Google+ (it was causing CPU usage spikes on both phoens randomly), minimal/no services running in the background. My daily usage usually consits of (accumulated): 30min browsing, 1h hangouts, 2h podcasts/music (though pre-downloaded by wifi), 1 minute calls (yes I sometimes use it for calling).

Let me say that 2 days is when I am gentle with the phone, otherwise it is around 1.5. In any case, a huge difference to how were the first smartphones hardly surviving until the evening.