This card was bought to use in a Panasonic HDC-SD700 Full HD camera as a cheaper alternative to the Panasonic SDXC card. Amazon requests reviews quite soon after purchase, so it is impossible to comment on long term reliability. However the camera has had quite a lot of use immediately after purchase; it was bought to cover a particular event that has lasted three weeks and provided many recording opportunities. All recordings (which have all been in best quality mode, requiring highest write speed needed by the camera) have been stored to card without any noticeable error, so it appears to work perfectly.
After purchase I later found further information about the camera's requirements and it may be that the card is over specification for this purpose, so this usage may not be exploiting the cards maximum capabilities. However so far I am very happy with it.