Summary: I love the verticle shutter realease and the 2 battery packs that hold 2 NB2LH batteries or 6 AA batteries. My camera was always running on low battery when I needed it the most, so this is a great option for me.
Summary: I bought this battery grip a few months ago and this was truly a great purchase! I love the fact that the magazine holds two NB-2LH batteries, so you can shoot forever without worrying about changing your battery. The extra magazine that holds AA batteries is great back-up option in the field if you don’t have the ability to charge your batteries. The vertical buttons make shooting a breeze.
Summary: A battery grip is very good for vertical pictures, like portraits. It's so much easier with a battery grip beacuse you have a second set of controls! It also extend the battery time. I would say it is a good investment!
Summary: I would highly recommend the battery grip to anyone using a pro-sumer Canon camera. (XT, XTi, XSi, etc...) The addition of this to your camera gives it the "Feel" of the full sized cameras, as you're now holding the camera with your full hand, and not just 2 fingers! You also have the convenience of vertical shots without reaching over the top of the camera. You'll have double your battery life (2 batteries in grip) for extended shooting in the field.
Summary: I use my Canon Rebel XT350 on late fall and winter days with temperatures down to 10 degrees. Having two batteries allows longer walks with enough power to take photo's. Everything on the camera works slower, but I have plenty of power to spare. The vertical controls are easy to use and are a plus. Just remember to turn it off. The camera power switch turns off on its own, but the battery holder power switch must be turned off or you will lose power fast.