I just bought a Canon s230 digital camera. http://www.powershot.com/powershot2/s230/index.html

This is my first digital camera. I don't know much about CompactFlash cards. I see so many brands and speeds. Are some better then others? What is a good speed to get (if it matters)? Are there compatibility issues with some and certain camera brands. I looking to get one at 256mb.

Like I said this is a first for me. I'm not sure what I should be considering.

Thanks,