Pros: Fast cards, I bought these to use with the Panasonic DMC-TS3, they work great for fast snaps, and recording video on the camera at 1080p. I also have a couple of the same card in the CF format that work perfectly. I've never had problems with these cards.
Summary: Sandisk makes great cards, I know because I borrowed my brothers camera and his generic/no-name brand card. About 1 in 20 pictures were corrupted. Forget saving videos. Never had that problem with these cards.
Pros: - Owned two of these cards for over two years camera. Never had a corrupted file or picture - Benchmark speeds are as fast/faster than class 4
Cons: - After two years, prices are almost the same. Shouldnt be this way for flash memory.