Is vista the greatest OS ever?
Not but admittedly it looked gorgeous with that dark aero theme.
Ignoring all other operating systems in existence... yes.
>>59413285
Best looking, yes. Best Windows, maybe, unfortunately the (artificial) lack of compatibility with some software holds it back.
If you install it today with all the fixes, service packs etc. it is quite good and stable.
The problem is that it wasn't when they released it.