I have the 15" 2.33 ghz C2D version, maxed to 3 gigs RAM. Here are my daily programs being run and storage requirements: Adobe PS, Illustrator CS3 and Contribute used several hours per day. HEAVY usage of Aperture and iMovie/DVD. Am constantly editing pictures then putting them into multimedia presentations (movies and Keynote). Over 25 gigs of music alone, needed to remain on the laptop for the presentations. The pictures need to remain on there too, although I am archiving the older ones using vault in an external FW drive. Daily the laptop is taken to an office, hooked up to a large screen to work with different projects. Afterwards it's brought home and hooked up again to a large screen (with access to external hd's). Often I'm working away from both desks with clients, however. So the need is for a robust hard drive which can 1) do the work quickly and 2) provide adequate storage when away from the external drives. Battery life is not an issue for the most part. Also, who can install the hard drive so I can maintain my Applecare warranty? I've done it myself in other Macs and iBooks, but know that the MBP is more difficult. I also have a Genius manual with directions, but don't want to void the warranty at all. Sorry fo the long post.