I've waited for this update! Literally everyday staring at my render status on FCP with my G4 FW800. Had my finger on the trigger to get the 2.66 15" but just knew I had to wait--I'm so glad I did! A pretty significant update and options (more so than the speed bump from a few months ago). Now support 8GB RAM officially is a HUGE plus!! I did not at all foresee the deletion of ExpressCard slots on all but the 17". I do video editing and currently use FW hard drives. I've wondered if in the future I'd start using eSATA through the ExpressCard slot. I honestly don't have any experience with this but see it more and more, thought it could be the future. I planned on getting a 15", but do you think having the ExpressCard slot is important enough to warrant getting the 17"?