Leith Tussing "I like tacos."
I bought these for my ELPH 520 more for speed than space.  I wanted to use the rapid photo taking modes on the camera and wanted to ensure the SD card was not the limit at all.  The UHS-1 cards are supposed to be faster than normal Class 10 cards.  So far I've had no hiccups or issues taking super high speed video footage and rapid fire images.