Pros: Fast for the price and cheap!

Cons: Might need to be initialized in your intended device.

Overall Review: I previously gave this card three stars in a previous review, and that was unwarranted. This card does indeed work perfectly in Canon Vixia cams -- just initialize it in the cam first. I've never had to do that before, so it didn't occur to me before I left my stupid first review. I did a speed test on my built-in laptop slot and the card writes solidly at about 20Mps. In practice, I shot about an hour of video today on a Vixia at the highest HD setting with shots ranging from a few seconds to a few minutes, and all turned out perfectly.