What is your favorite Windows OS and why?

Windows Vista ultimate. I have 3 computers and a file server, all running ultimate. It is the most secure, it has the most features, and plus, it gives you the most bragging rights.

And i love the 3d interface and widgets!

Win2k Server. It is way FASTER than XP and I'll tell you why.

XP is the abbreviation for experience. Which in Microsoft's understanding means they have included a myriad of error catching code to try and interpret every potential USER input that could cause a fatal error. This additional data validation is what slows it down. With the high speed processors, you don't see it as much, but I am using a 400MHz Celron with 512MB ram and running the same software at home (3D Modeling) as at work, my system is faster than the 2.3GHz XP machine at work.

It is extremely accessible for tuning and tweeking, and it's rock solid. I have never had a blue screen in 6 years of use. The server version has a large selection of system tools and Microsoft has lots of free downloads of diagnostic and repair utilities. There are fewer hardware conflicts than any other Microsoft OS. It was the last OS by Microsoft that didn't have to be registered or activated to get updates. It will be supported until 2010 according to MS.

I have used OS X for the last few years (sorry) and Ubuntu recently, however prior to that I used Windows exclusively and I still do for work. I have run everything from 3.1 to XP. I have not had Vista on my own computer as of yet, but I have used it at a local computer store (1gb RAM). If you open a Vista interface, ie Aero or Media Player, and move it around your desktop with the mouse, watch what happens to your CPU, it pegs it..........So much for multi-tasking on Vista. From what I have read though, it's security features are much better than XP (read on) and its Networking is far superior to any other version of Windows. Personally, my fave version of Windows is 2000, it is stabler although a little slower than XP. I also like 98. I do not like XP as I have had to fix problems on an ungodly number of computers that have had OS problems running XP. XP is not bad.........IF..........you know and understand how to maintain it, unfortunately there are far too many people out there who just want to turn their computer on and surf the web, email, etc. and do not maintain their OS.

Windows 2000

I'm sticking with Windows XP. So far it is stable and the updates is still coming in, and it is faster to Windows 2000 with the same hardware. My laptop has only 256MB RAM on it, and XP runs just fine.

I like Windows NT back in the old days, but it is too obsolete now.

Windows 95, 98 and ME is just too unstable.

Vista is too resource hungry so I can't put it as my favourite yet.

Probably Windows 98, because unlike XP 98 wasn't so pickey with hardware.

Windows xp. or windows 95

windows vista, not only cause i got one also because it has this thing that i don't what it is called that blocks anything that will affect your computer like spams, viruses, or anything, it also wont let you run programs that are danger to your system called DEP.