People should go with the Sandisk extreme 200x cards for now, these are highly rated by toms hardware.
All others have a habit of dropping the write speed=errors. I think the issue is the card, the sd controller is probably getting a write error back? If everybody moves to the sandisk 200x, sustained writing of 22.6MB is probable, ie 180mb/sec.
http://www.tomshardware.co.uk/compactflash-sdhc-class-10,review-31878-8.html
All others have a habit of dropping the write speed=errors. I think the issue is the card, the sd controller is probably getting a write error back? If everybody moves to the sandisk 200x, sustained writing of 22.6MB is probable, ie 180mb/sec.
http://www.tomshardware.co.uk/compactflash-sdhc-class-10,review-31878-8.html