I like to think Apple takes a lot more pride in their products than other companies, I know this used to be fairly true, not sure about now though. But every laptop I have ever owned broke down within the first year, so I always made it a habbit to get the extended warranty. But like I said, Macs may be a lot more sturdy.
Also from my experience, laptops are never as powerful as desktops (pretty sure this would be true for Macs as well), since you need a powerhorse for editing, you might want to go with the desktop. Hope that helps some. A real Mac user like Jay will be able to give better input though.