Yup - that seems a fair estimate.Are you saying 220 on a 2gb?
The extreme IV has almost double the speed of the Extreme III. But you are right, the price for them is also double so its not worth it at least for me.
I have 10G of Extreme III here and its not going to change anytime soon.
Transfer speeds to the pc will be much more pronounced with faster cards. Extreme IV cards will only make a noticeable difference in camera's that support UDMA (is that what its called?) technology...mmmmmm D3...It may have double the performance of the III in Sandisk's lab but in your camera the difference will be negligible.
Next question. I take it a Sandisk Extreme IV would be over kill on a 350D? or a 40D if I ever upgrade!
Just ordered a 4gb card for £37. Only problem now is running out of space on the PC when I download the pics!