Summary: I've been using this to transfer files between my laptop and my new PC, and I haven't noticed any significant difference in speed between the SD slot in my laptop and the USB (via adapter) ports on either PC. Shouldn't the SD slot be faster than USB 2.0?
Pros: Owned it for about a year now, has never failed, broken, or otherwise. Runs much faster than my other SD cards (Classes 2&4).
Cons: It's gone down in price a couple dollars since I bought it, but hey, that's how memory works.
Summary: I use these cards in my camera and take very good care of my equipment but there is nothing that could save these cards except the manufacturer deciding to increase build quality. That won't do me any good now, though.
Cons: Possibly the worst card I've ever owned. Over the last month all three of the cards that I purchased separated at the seams causing the write protect tab to be lost making the cards useless. I have several older low dollar cards and none of them are of such poor build quality. Stay away from these. You'll be sorry if you don't.