few qeustions

I hope somebody can awser this qeustions.
What you prefer diamondback or mx518
What fov to use and r_mod
My display can have 200 hertz refresh put it on 200 or 120 equal 2 fps.
Anybody nows a good way 2 gain much fps?
1600 dpi or 800 or 400 and why?
whats the best way 2 test sensitivity's
Hope raziel can awnser this doubt it do he will awnser.
Hope he'll put a link of his et cfg:)