OK, so there is a lot of complaining but the high end 15" and 17" machines are basically like mac pros in portable form for much cheaper. Let me explain: I use my mac in clamshell with an external monitor and external hard drives for work mostly and a fair bit of photography as a hobby using aperture (with a 30,000 RAW image library). My current 13" macbook aluminum can perform this task decently although not admirably. I've been thinking about upgrading to a mac pro for awhile for both the hdd space/speed and the graphics and processor speeds available. However, I love being able to have the convenience of taking my laptop with me when I want to and because of this have held off on a new mac pro. These new machines combine the best of both worlds: 1. Powerful graphics cards and processors with the ability to attach huge, FAST hard drives (through thunderbolt) at likely native hard drive speeds as it gives direct PCI access + 2. Ability to take computer with me whenever I want for work = good job apple!