Got this card for my Nikon D7000 as it supports the new UHS-1 speed rating. Since a 32 GB card will last me a while, I figured it's an investment worth going for. And I wasn't disappointed.
Speed; indeed--it's the main reason anyone gets this card; no? Also; SanDisk reliability
Expensive--still deciding whether it's really worth the price; If you don't normally shoot in bursts, or need to review your shots immediately (I mean less than 1 or 2 seconds after release), then a class 10 may be just fine--class 10 will even do 1920x1080p 24 fps just fine