Attached Link: http://www.robgalbraith.com/bins/multi_page.asp?cid=6007

Pros and cons of high speed cards; Pros: 1) Faster write times...this is a double benefit because it also saves camera battery life. The cam takes less time to write the data, resulting in less battery drain. 2) Faster read times...a real bonus when you want to dump a 1 gig+ card to your computer Cons: 1) Compatibility...make sure your camera is compatible with the super high speed cards. 2) Camera limitation...at some point, the bottleneck in write speed will be the cams ability to write to the card fast enough. 3) Cost...only slightly more expensive than reg speed cards I have recently seen 150X cards available, but I can't vouch for their quality or compatibility. For those interested, I have attached a link to a compact flash card performance database...lots of info with performance tests on a camera by camera basis...some interesting stuff... As everyone else has already said, RAW is the way to go!

In youth, we learn....with age, we understand.