Not to split hairs here, but...
As for how drivers work.... Totally different now. Most drivers used to sit at the Kernel level and now they're run in a user enviroment meaning when a driver fails for whatever reason the whole system doens't even come close to crashing. This also FUBARS trojans and viruses from being very successful since they never get near the Kernel.
That's been in OS X for six years now.
And hell, OSX isn't that great anyway. Everyone touts it as this amazing OS but the GUI isn't even as user friendly as XP in many cases. The GUI in Vista is more than "eye-candy" though. It is highly intuitive. It does what you expect it should and there is so much customization to be had.
Now I'll give you that Finder sucks sometimes, particularly with network shares, but the GUI of any system isn't nearly as efficient at the command line, IMHO. The GUI, for me, is for my mail client, my web browser, misc. apps, and that's about it. If I wanna move stuff around my hard drive or the network, I switch to Terminal.
Vista's cool, granted. Fact is, it's still catching up to the stability I've been enjoying since Jaguar, which is five years old. Not to say it's been without bugs, but MS is selling Vista like this is shit we've never seen before (well, not from MS anyway). I'm just not all in a tizzy about Vista. Probably the same way a Chinese dude isn't super excited that he knows English. Sure, it's a good language for communicating with those round-eyes, but it's not going to compare.