
I use a Canon T1i camera for slow motion and video and I love fast shots. I used it on a mountain in snow and moonlight at 14 degrees and only once encountered a small buffer window on a long 1080p video. Works great, I've never had a problem with sandisk cards, they help me shoot for a living. I also use Ultra II cards and only notice the slightest time difference when writing to the card in the camera. Downloading data from the card to your computer takes longer than Ultra, but if you don't need to dump data quickly, this option is fine and cheaper. I would choose memory size over computer file transfer speed anytime.

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