I'm using the wonderful, the flawless, the utterly, 100% perfect with no bugs, instability or anything of that sort - Vista 64. I mean, I can't overstate how completely perfect this Operating System is. I love it and everybody who designed it so much I wish I could have their children - damn you, male chromosomes!. This OS is so completely perfect whenever I boot up my computer I jizz a little in my pants. It's just that good. I can't see any flaws whatsoever and don't find every moment, every little, torturing fuckup it makes some kind of eternal torment for my sins, because there is none, of course.
My first Operating System was Windows ME, I think. Or it could have been 2000. I hope it was 2000 or I may have serious psychological trauma from exposure to the Mistake Edition.