Digital photography

To any 550d owners, what memory cards are you using? i just brought a scan disk class 6 16gb card that doesn't work too well when recording film (i.e about 5 secs before it gets overloaded) apparently certain models work better than others.

Trancsend Ultimate 16gb SDHC card is fine for me and recording video. It reads at 20mb/s and its under £20 squid..

I bought two and theres been no problems with them so far.