Are you a fan of free stuff because if so you can pick up the Kingston 4GB Elite Pro Compact Flash card for $40 and send in a $40 rebate which = FREE in my book. You can check out this deal Here.  Please note, the rebate is valid only if you purchase the flash card from Adorama Camera.  Notice though that the seller on Amazon is Adorama Camera, so I would highly recommend you take a screenshot of the Amazon product page and print it out to send it in with the Rebate form (along with your receipt) to prove to them that you did purchase it from Adorama.  Enjoy!