I wanted a grip for the odd occasion where I am shooting portrait orientation and wanted a vertical shutter button. It is so much more comfortable than the hand twist needed without one. I also bought a Meike grip. Works perfect. Admitted built quality is nowhere near the Nikon version, but it does the job and for the small amount of time I use it, it's fine. Now if I was to have the grip on permanently, I definitely drop the dough for the Nikon. Batteries, only Nikon's here. Now that the price had dropped to around the $50 mark, I see no reason not to buy Nikon.