Be sure it is C6. That's the highest speed class at this time. (Also available from Amazon, god I love shopping at amazon. I've bought everything from computers to Telex Steering systems and even the occasional book from them. One click and it's on its way to you.)

Anyway, Not too long ago, I bought three 8 gb sd cards from amazon for $15 ea and just lucked out that they were C6 (Class 6, I think it stands for) Last week, I bought three more, but didn't notice until after they got here, that they were C2. Huge speed difference.