Anyone know what the difference between these two cards is? Other than the A91 vs X46 in the name, I can't spot anything. Yet there's like a $300 difference.
http://www.amazon.com …/B004ISL3GA/ref=de_a_smtd
http://www.amazon.com …/B004JNZJV4/ref=de_a_smtd
The X46 would be an older model. Either they've got the wrong model number on the correct description or the wrong picture and copy on the right model number. SanDisk's model numbers usually reflect the card speed with the last 2 digits (A91 vs. X46), not in a direct linear relationship, but at least relative. It's possible the X46 is (despite what they say on the SanDisk site) a 90 MB/s or UDMA6 (or both) card. However, either's overkill for a 5D3, especially for video.

