OFFICIAL WINDOWS POWER RANKINGS

It's agreed that XP was the pinnacle of Windows.

...

ACCEPTABLE TIER

POWER GAP

SHIT TIER
Windows

People saying anything before 7 was acceptable speaks wonders how little they know about computers.
An operating system is supposed to abstract resources in such a way that the user is in complete control over the machine. In particular, userland shouldn't be able to mess up with your resources arbitrarily unless you specifically let it do it. Well, this was obviously not the case in any form on ANY DOS based windows, so they are ruled out. XP being NT based was better, but still trailed a lot of shit from that era, it was common to get your computer fucked up from nothing on userspace, specially without service packs. In W7, if some program fucks up you can recover your session in most cases, in XP the opposite happened, more often than not you had to go to the restart button or fucking format from scratch.
Modern versions of windows are even better technically but with all the telemetry and other useless crap they get a default 0 score.

So... Vista is the best?

[God Tier]
[Good]
[neutral]
3.1, 9X, 2000, only tolerable Windows OSes.
[Bad but not the worst]
[Absolute shit]
1.0, 2.0, ME, XP, Vista, 7, 8, 8.1, 10, and all their 'server' OSes. The only excuse to use Windows is "muh gaymen".

For work I now have to use Windows 10.
Everyone who says they like it unironically gets excommunicated immediately.