I’ve been working with a MacBook Pro and OS X 10.8.2, and I have to say I’m not impressed. Coming from a background that consisted almost entirely of Windows and Linux, it isn’t all it’s cracked up to be. It’s still another OS with it’s own set of problems. That said, the user interface is more consistent and usable, in a lot of cases, than Windows and especially Linux desktop environments.
If your sick of your brand new MacBook just working (more or less), and you just feel like modifying your kernel’s source to get your computer to work right, you’ve come to the right place. I (finally) managed to get Gentoo booting on a new MacBook Pro (15”, Core i7, mid-2012) alongside OS X 10.8.2. I suppose it actually wasn’t that bad, it could have been much worse. I only had to reinstall OS X once after a wonky partition editor….