I use ME at home, although I cannot stand it. At school we have some pretty nice comps using 2000 NT, and I love them(probably something thats unheard of for school comps). Personally I think 2000 NT is best, it's very stable and efficient, I can run Premiere, Photoshop, and surf the net without having to worry about saving like I do at home or on my friends PC w/XP. But OS X rules, even though I don't own a MAC.