Which one is the best operating system?

1 Microsoft Windows 7. Windows 7 is the best OS from Microsoft I have ever experienced

I think that Windows7 is the best system

soffia you r really simple girl

Windows xp is best in my side.

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Windows XP or Windows 7

Only window XP! Only window XP!

Ich benutze eine Menge, aber immer noch fühlen, ist die beste Verwendung von lenteen win7

I'm working on Ms XP and Win7 as well.

I've been on W7 for the past 2 or 3 years, switched to W8 recently, can't say I'm too disappointed, so far it's ok.

Window 7 is the best.

Apple IOS hands down! ;--)

windows 7 is best os.

Window 8 Also very good OS.

I like Windows 7. It is very user friendly..