Excerpt: I found the D7000 a bit small in my hand, while its a great camera the thought of a battery pack/vertical grip seemed to be a natural addition. I find the MB-D11 very comfortable and solid, I've only used it for a short time but I really like the way it feels in my hand. Its quick to detach to change out the battery and although the connection is a simple design it works well and holds securely.
Excerpt: The build quality of this Nikon battery pack is far superior to third party brands of this type. Heavy duty and professional, this battery pack doubles battery life, and allows for vertical photography with ease. High price, but worth the piece of mind that the product will work on command.
Excerpt: I've been doing an extensive research on whether to buy this grip or a 3rd party one and I decided to buy this one. Even though it costs $-$ more I thought that it would be wiser to invest in an authentic product rather than in some cheap copy. One of the driving factors in my decision was that the 3rd party battery grips don't have the ability to switch from an internal battery to the external one (or vice versa) when the first designated battery runs out.
Pros: Easy to Install, Long-Lasting, Reliable, Solid Construction