Thank You ,
After thorough users' feedback and reviews on tech websites and and tech channels , I decided to go with:
K70 LUX RGB Mechanical Gaming Keyboard — Cherry MX RGB Red
http://www.corsair.com/en/k70-lux-rgb-mechanical-gaming-keyboard-cherry-mx-red-na
It is the same as the Rapid Fire , but instead of the Cherry MX Speed with 1.2mm mechanical actuation , it has the regular 2 mm actuation which I feel a balance for gaming/typing vs over keys' sensitives. It also fixes issues of the K70 RGB , since it took some updates from the new Strafe RGB such as: Has new controller for a more fluid lighting, USB Pass through and STRAFE RGB key-caps comparing it to the older K70 RGB, fixed the 16.8 million colors flickering issue on the K70 RGB.
Corsair K70 LUX vs Razer Blackwidow X
https://www.youtube.com/watch?v=Sq-j1pxOKME