If it's a high speed card you need then this is the one,if you don't particularly need high speeds then there are plenty cards around cheaper.
The Duracell Flash ProPhoto SDHC cards optimize recording performance to ensure that you capture more hi-resolution digital images or digital video. Available in the highest possible speed class, currently Class 10, these cards can transfer image files from camera to card at an impressive rate of up to 30 MB per second. The speed capabilities of these cards are optimized for photo and video and won’t provide any tangible benefit on other devices. As with any SDHC class memory, please check your Owner’s Manual to ensure that your camera or recorder and your card reader are HC-compatible.
Perfect for all you rapid shooters out there!
Class 10 is quickly becoming the 'must have' speed for many photographers. The spec is very high on these cards and will easily keep up with the most demanding of users whether you are shooting stills or video