Instruct: Classify Amazon reviews into positive or negative sentiment
Query: once you go batgrip you never go back

Although I've never quantifiable measured number of exposures or time difference between a single battery and using the bat/grip. It feels like 3 to 4 times as much power before I need to change out the batteries. The extra weight also feels good on the camera. As far as the vertical controls, it would be nice if there was a menu/selector button on the grip so you could cycle through things. Also when I'm in vertical mode i tend to push the menu/selector button with my forehead and focal point runs all over the view finder. a little weird.