I just purchased a Macbook Pro 17" to replace my six months old Macbook Pro 15". I was at first a bit skeptical that the upgrade would be worth the extra cost, but after using the new machine for a couple of days, I can say it was an excellent move. Among the *really* nice new features, + A larger screen + A longer lasting battery + An extra USB port, and a FireWire 800 port + A larger hard disk + A double layer DVD R/W There is also a slight increase in the CPU clock speed. All of this for a little bit more than what I origninally paid for the Macbook Pro 15". Amazingly, this larger machine still confortably fits in my backpack. I just love Apple .