Fast Card Reader How Fast SD Card To Use With Canon SX 100IS?

How fast SD card to use with Canon SX 100IS? - fast card reader

Does anyone else have quick success by using the SD card with your camera Canon SX 100is? I use it for continuous shooting and video recording, which requires faster SD card. I contacted Canon and they said no readership of your camera / write speed of the card reader in the room. How do I know which is the fastest SD card to buy? I do not want to waste my money more quickly to the memory card, if not the device can use.