Does using a class 6 card improve the performance and speed of your camera at all? I was thinking about investing in a class 6 card. They seem to be going for around 55 bucks at various websites. The main reason I wanted one was because I copy entire seasons of TV shows to my sd card at one time. With the stock class 2 card, it takes about 30 minutes for one season of Dexter (watch it now if you haven't before, it's the best show on TV) to copy to the card. I would expect an appreciable decrease in copy times with a class 6 card. So would I be wasting my money? Or is it worth it?