I just did a hard reset, and yeah, this battery is a beast. I unplugged it about 32 hours ago, and still on 20%. That's with two workouts of streaming audio for an hour each, email set to every 30 mins, LTE on, location on, Bluetooth/NFC off. I also made a few calls, texted a bit, surfed here and there.
Before the hard reset I was using a battery tracker, but I didn't re-install it. I'm not saying it was a drain, but battery performance overall seems to have improved without it. That was the only app I didn't re-install.
-edit-
Not to disparage other platforms, but to compare; my wife took her GS3 off the charger at 5:45am today, and after the gym hers was already at 75%.