Just got a 7D and would like a card that is fast. Not really for bursts, but more for transferring to the laptop. I have USB 3.0 and a USB 3.0 card reader. I don't really need/want over kill, but I'd like to be able to utilize the full speed of the card reader at least. It's just a hobby for me, so a huge card or multiple cards isn't my need. 16 or 32GB should be more than enough.