OS X Tiger...
...or more on my new iMAC.
I can't break this fucker...it just runs. Like that damn bunny...it just keeps going and going and going. I've tried hard, but I can't bust it. After all, it is based on UNIX.
This ain't no Windows, this ain't no fooling around.
Spotlight could be is your best friend. Spotlight is bright.
Anyway, I'm not going to review a MAC operating system, or Linux, or Windows, but I am saying Tiger is well thought out. I'm really impressed. Blows the doors off Windows.
Aside from the stability, connectivity, speed, graphics and sound, I don't know why anyone would want one.