OK, hopefully this topic hasn't been beaten to death and I failed to properly search for it. If so, please feel free to point me to the appropriate thread.
Right now I have the XSi and am using sandisk ultra II's and I get 6 shots before the buffer fills up and drops shooting speed when shooting raw.
My question is for those that are using faster class 6 and 10 cards - what are your numbers like? I wonder if the class 10 cards will translate into more frames before I fill the buffer. I'm in the market for a bit more storage, and I am trying to quantify/verify the value of spending the cash on the newer high speed cards.