I can see in the manual that they recommend Class 4 SD card, but there are cheap SDHC Class 10 cards on Ebay from Hong Kong.
Can you guys recommend a SD card which has no problem with speed and duration of the video during recording?
i've got a ..Sandisk EXTREME HD Video sdhc (class 6) that works excellent. Got it from Camera House $30 cheaper than JB's. Beware the ebay cheapies[}:)]
There really is no need to go for a class 10 card with the Gopro's... We just use the cheapy ebay ones and have never had a problem.. (and we sell lots of them)
If you do decide to go the class 10 though - I use one of the Class 10 - 32gb 'Team' brand cards in my Canon 550D and it works just as well as the Sandisk Extreme. I've compared both and the difference is very very small, and the Team is half the price...
Or if your quick enough.
www.shoppingsquare.com.au/daily_clearance.php
7 hours left on huge clearance on Sandisk SD cards.... Free shipping aswell.
For HD video id probly stick with a the Extreme video cards they offer 20mb/s transfer rates, although I think the GoPro caps out at recording at about 15bm/s still worth the small price difference.
Then just work out the size you want.