Excerpt: SanDisk is the most trusted brand I know of. I've never experienced errors with their media and I can happily report these cards have continued that perfect track record. The cards are fast enough to record video on my Jvc hm600. I was tempted to get faster cards but it won't improve the performance of my device and I use usb2 to transfer files which also negates any speed advantage of faster cards. These cards give the best value.