In the next few days I am going to head down to the local camera store ( http://www.porters.com/ ) and I am going to get a Cannon Rebel Xti. My biggest question at this point is is it worth it to get the X133 cf card or will a X80 card do? What is the diff betwene CF CF2 and CF3? I ask the people but thay say that there is little difference....If there is no difference then why give a different name? I am going to be using this camera to take pictures of dogs. I believe that the 9 seconds that the 3FPS burst mode will last should be more then enough to get the picture(s) that I need befor the pup wiggles out of what ever pose I have it in and will need to take a break to repose or switch to a different dog.