SanDisk SDCFX3-004G-A31 4 GB Extreme III CompactFlash Card (Retail Package)

This CF card is the best you will find. The speed of 30MB/S means I can keep my camera shooting at max FPS without having to wait for the buffer to clear. It copies 7MB images instantaneously. The card itself is very solid and durable. It comes with a plastic case and a nylon zipper keychain for storage, as well as a Sandisk recovery CD.

Perfect purchase process. The product came in perfect shape. It was for a gift (no opportunity to seeing it performing)

Planning a trip, I am stunned to think that this card allows me to carry the equivalent of over 20 rolls of film for my Nikon D-70. Writes fast, works great. And it freshens your breath!

It's Difficult to make a drawn out, detailed review for this product.
Simply because its exactly what they say it is: fast, accurate , reliable data storage. Ive used it in the snow , and in the blistering Arizona dessert, pared with my Xti. I have NEVER had any issues with it, ever. So far I have had 3,000 + images taken, most in raw. The box came with a good quality key chain to hold another memory card and a well built plastic case to hold it.
Should I ever need another memory card , or need to recommend a card to a friend , this will be the first , and only memory card on my list.

I have had this memory card for nine months. It's the best that I have owned. It functions flawlessly with my Canon 40D. Excellent speed. I can't say enough positive things about this excellent product. I take it out of the camera and insert into a reader, to take photos off the card. I have never had a problem, after many thousands of photos and numerous insertions into the card reader and the camera.