I currently have the 2.2ghz model black macbook. It's running 4GB of ram and a 250GB HDD. It works well enough truthfully, but I'm curious if the 13" MBP would be any better for running aperture and lightroom and photoshop CS4. I shoot with the 5DmkII and a 40D and my 5D RAW files are pretty intensive to process. I've definitely noticed a significant slow-down in processing on my macbook. I'm wondering if it would be worth the upgrade. Or just hold out as long as possible and get the higher end 15" down the road.