Ok, I need to buy a 512meg SD card (for a canon sd400) and I was told to get a fast one to keep up with a camera when doing video recording and fast shooting (which is pretty much all I do). My question is what is a "fast" SD card. I believe the review said I should get at 60x SD card. I would like to keep this as cheap as possible but I don't want something as trivial as the card be the bottleneck for the camera. What brand would you reccomend or better yet a newegg link would be fantastic.