I use the Transcend SDHC 16GB exclusively for photo applications. Overall, I gained five of these cards in use. Whether in freezing temperatures or the heat of summer: there has never been failures or defects to complain. Whether in the Nikon D90, the Canon PowerShot G10 and Panasonic Lumix FZ50, the cards do what they should. Save quickly and reliably! The transmission speed of the reader in the PC I have never measured. Subjectively I feel the speed as fast, even without concrete measurement. Several hundred high quality photos are "Ruck Zuck" transferred to the PC. There may be memory cards that are even faster. I save every year several thousand photos and for this purpose, these cards are fully sufficient. I can understand the Transcend SDHC 16GB - recommend unreservedly card, the price-performance ratio is right!