I use the card in a Canon EOS 7D. Until that time I had a SanDisk Extreme III 4GB used and looked for an alternative with more space. Since the Canon EOS 7D requires 8 frames per second for a very fast card, I decided for Transcend.
After several tests I am very pleasantly surprised. The speed is sensational, the price / performance ratio excellent. Opposite the SanDisk Extreme III clearly in pace, and price advantage and therefore highly recommended!