« on: March 18, 2013, 03:35:00 PM »
I bought two 32gb 1,000x Sandisk Cards around Christmas from B&H. I shoot sports and had something similar happen to me a few times while shooting basketball games. At the time I had a 1DIV and a 5DIII. Happened with both cameras when I got close to filling the buffers. Luckily I kept the original packing and B&H agreed to take them back in exchange for 2 similar Sandisk cards - the Sandisk cards were almost twice as much but I have never had a similar problems to the one I had with the Lexar cards and my Canon Cameras. I will say the Lexar cards were super fast downloading from my card reader and I did have more buffer head room but it still wasn't worth worrying about camera lock up . . .The reason I purchased all professional gear, is so things like this CANNOT happen.
Stuff like this can ALWAYS happen, that's why "professional gear" has two memory card slots.
I should also point out that the cards didn't fail i.e. I didn't lose any data while I had the cards, they just didn't play well with my cameras . . .