At the risk of being controversial, I have my own opinions about large grips. Sure, they can be useful if you habitually shoot in the portrait orientation, but I strongly suspect that many people fit them in order to look macho and professional. I have tried them because I had a shoulder problem, now resolved by surgery, which meant it was painful to curve my hand over the camera, but I hated it. These cameras were initially designed with compactness in mind. Why spoil it with a grip? Simply carry a couple of spare batteries in your pocket and enhance your manly attributes this way!