Shooting RAW only, or RAW + JPEG at a 8/sec burst, with, say a Sandisk Extreme Pro, How long does it take for the RAM buffer to empty to the card? Also, the Canon site says about 15 shots RAW and about 6 RAW + JPEG to fill the buffer. Is this what the people here are getting with a 90MB/sec UDMA card? I should probably also ask, can the camera take advantage of the 90MB/sec cards, or will it write just as fast to a 60MB/sec card? (I called Canon, who said they do not publish nor have access to the actual write speeds).