Excerpt: I both these for my Canon EOS 6D, and they are brilliant! Even shooting RAW, there is almost no lag in the write time (Less than a second for a 20MB file). Much faster than the cards they replaced (those took 2-3 seconds per RAW photo), I can also shoot full HD without worry of buffer problems. Great price, fast speeds, reliable, these cards are a no-brainer. I highly recommend them.
Excerpt: Class 4 was what I got with the Nikon camera bundle.<br />I expected class 10 card for fast writing video or continuous still shoot.<br /><br />Its ok for backups. Fortunately I got some spare 32GB Class 10 x200 SDHCs for $15 each form Adorama.