Monotony: with my 5D Mk2 it works wonderfully, but rarely I get to the border, where the internal memory is full and it depends on the few seconds where the data is then shoveled faster on the card and I do not miss the golden shot.
BUT: this card is faster and cheaper than the Extreme IV.
And with an appropriate reader (with me the Kingston 19 in 1) very fast when transferring the data to your PC. 3-4x faster than with an Extreme III, the version 30MB / s and old reader.
To Ask?
:)) P