Which is the Best Microsoft Client Operating system ever released? A)Windows 10 b) Windows 8.1 c) windows 8 d) windows 7 e)windows XP f)2000,98,95,

For me its the current version-Windows 10

it is windows 7 professional 

for me it's windows 7 professional then windows 10

For me Windows 7 is the Best Microsoft Client Operating system

Windows 7 is Best..its easy to understand For all

Windows 10 is the best last version updated  

windows 10 for me , its start menu has the flexibility of windows 7 start menu and elegant style of windows 8 , it has a personal assistant ( Cortana ) , they enhanced the speed of copying files , they replaced IE with Microsoft Edge witch is faster , it has Hyper-V feature installed already and more . 

Windows Seven. Stable and more control 

I am using windows 10.  Because we can add multiple desktops,available Task view,windows 7 start menu is back   

I loved windows 7 and I am using it so far.