Good question, Damian - I remember some discussions on the a while back, but not if there were firm conclusions (my takeaway was that there can be bad cards from any manufacturer, but Sandisk and Lexar were the more reliable).


On a related (if no less tangential) issue, I'm not a big fan of large cards - a 64 GB card will hold >2500 RAW images from a 5DII (and more from cameras with fewer pixels). In the event that a card should fail, or get lost, or get chewed on by a dog, or whatever, that's a lot to lose - something grandma said about eggs and baskets comes to mind...