I have been quite happy up until now downloading images directly from my camera to my computer without the use of a card reader but the M9 produces such big b***dy files that it takes forever these days. I've never had a card reader before so I need some help please. These are my parameters: I will be using Sandisk and Panasonic SDHC cards I only have USB ports that I can plug the reader into I am running an iMac that is about 3 years old Am I going to get a benefit at all if I am using a card reader via a USB port? I have read that the new USB 3.0 compatible card readers are super fast, will these be of any benefit to me in my older USB system? Any info would be greatly appreciated.