BEST WINDOWS & WHY (no linux , mac talk plz)

Lets have a discussion on windows platform only, i think it will help the viewer to chose the best operating system and for us to learn more about the platform we work on.

Plz give the reaoson for your vote.

I chose windows 2000 professional becoz i think it’s stable and more reliable then XP, i works better with slower computers too.I have heard windows 2000 prostrate in front of viruses.