I've noticed we have SD card discussions in several different camera specific forums. Does it really matter which camera one is using in regard to which SD card one should choose? For example I used to always use a Sandisk Extreme Class 10 (4 GB, 30MB/s*), now I have two Extreme Pro 8GB, 45MB/s* cards that have a little 1 next to the SDHC icon and another 1 inside a little sort of "bucket" underneath the 45MB/s* denotation. I'm pretty sure the second cards were recommended to me by Don/Streetshooter, and I believe I bought these when I purchased the Fuji X100. Can someone knowledgeable give an overview of SD cards and what people should look for and whether or not the decision is camera dependent?