Summary: To give Transcend the benefit of the doubt, I set the card aside for a number of months before trying it again. The problem didn't vanish in the interim. I believe that this problem is specific to this card because NO other brand I have used (and I have used many!
Pros: It was a fare buy at the time, more than a year ago. Subjectively, it appears "fast enough" for amateur photo work.
Cons: Semi-incompatible with Panasonic Lumix FZ35. Problems appear in 2 ways: -Occasionally, unpredictably, it will later say that a particular photo cannot be displayed by the camera -It will give a black blank screen when you try to view, on the camera, a video you have taken. -The video IS viewable ...
Summary: Got this for a raspberry pi - it works with rpi. I was trying to gain a little extra performance by getting class 10. I got 8gb because I read that smaller cards can perform faster on rpi. I'd recommend this because of the price, not the performance
Pros: Good price. It worked. Decent size.
Cons: This did not perform as fast as a 16gb micro-sd no-name card that I had in my phone. The 16gb card did about 25mbps whereas this did 21mbps with the same workload on my laptop by fio. I only ran 1 workload because I didn't want to wear the card unnecessarily. Maybe Linux will generate a different...
Summary: While the card was failing before, I think I may have put the last nail in the coffin by removing it from a Mac before ejecting it.
Pros: Worked pretty well while it lasted. I used this in my point and shoot camera for that entire time.
Cons: This lasted me about a year and then became corrupt. Luckily I was able to recover most of the pictures. It won't even format for me now in the camera, or on a computer due to IO errors, so there's little hope of salvaging it.
Excerpt: It is a good card for slower shooting and video. The card locks up after the 4th or 5th picture on continuous shooting. Seems to to be allright in the all around picture of things. I have a Nikon D5100.