Excerpt: I wish I knew the importance of a "Class 10" card (speed) before I bought my last 3 memory cards. I replaced the "Class 4" in my Smartphone with this one and I no longer notice the delay between snaps when I take pictures.
Excerpt: I bought this card for a Sanyo Xacti recorder. It works great for the MP3 recordings, however the recorder says it is too slow for recording in WAV format. I have yet to find out if this is due to the card or the recorder.If needed I can always use it in my D300s.