Hard to believe how fast the card is. I've done tests and found out that it is only a few seconds slower compared to the twice as expensive Sandisk Extreme III. Strong buy recommendation for Transcend because you will be the difference for Sandisk hardly notice and the card has a super value for money. I can not say much because I have the card until a couple of weeks, but so far I do not Transcend has gone kapput Over the lifetime of the card. For 5 stars from me!