Last weekend I was shooting some action shots at the Barclaycard Freerun Zone at the Thames Festival. The guys who were doing the freeruning moved like lightning and the 9 FPS speed of the D3 came in handy when trying to keep up with them.
After I used up all the room on my Sandisk Extreme IV 8GB card, I switched over to the backup Extreme III 4GB cards. The speed in writing images to the cards was painfully slow compared the faster Extreme IV. It made me want to do a little research into which cards have the best write times. After a bit of digging I found this handy Compact Flash card speed database by Rob Galbraith - it shows the write times for a selection of cards being used by different cameras.