Android vs windows vs black berry vs symbian vs ios: which one is best os?

[dhilip]

I want to buy new mobi

 

[Rajshekar]

1-ios
2-android
3-windows
4-black berry
this is smart phones software ranking

symbian is not a smart phone software,its nokia phones which are under Rs.6000,i mean basic old phones

 

[Jacob]

If you want comfort-IOS.
Learn computers/programing/hacking-Android
A PC like phone-Windows.