Since I have been using the Nikon D7000 for about 8 months now, I have been using SanDisk ExtremePro memory cards. I initially purchased the Card for its industry leading write speed (Up to 45 MB/s). The D7000 and the SanDisk ExtremePro work great together. If you shoot RAW files it allows you to fill the buffer(10 shots), and then around 2 shots a second after that. It also will clear the buffer in about 4 to 5 seconds. These write speeds are also great if you are shooting Full HD video around kids and sports and expect to get fluid crisp movements in your video.
Also one very important feature of this card is its durabilty. SanDisk claims the Memory Cards are waterproof tested to withstand up to 72 hours in salt or fresh water to a depth of 1 meter. They are also shock and vibration proof, and can withstand up to 500Gs of shock. Additionally, the cards are magnet proof and X-ray proof, so they won't be affected by an airport's X-ray machine.
I can personally comment on the waterproof feature! I just recently missplaced one of my cards, and found it at the bottem of the washining meachine at the end of the 36 minute warm/cold cycle. I then took the card, inserted it into the computer and all images were perfect with no damage at all. I reformatted the card in the camera body and kept shoot like normal the next day! Good enough test for me!
Check out the 8GB version and the 16GB version with great prices on them since they have come out.
