Third vote, I purchase a legal copy when they don't fuck up. Windows XP Pro and Vista (both 32/64-bit). After Vista, I got pissed off and got Windows 7 and 8 because of how shitty Vista is compared to them. Fuck you, Microsoft. Make a real OS that's worth my money next time, like 7.
Ah ... that felt good to get it off my chest.
Correction - I purchased XP Pro and Vista, is what I meant.