Depends on your reaction time most common is 50-70
I use 50, but my mouse is special for gamers, and he haves a button who controls the sensivity. I think that should be equal to 80 ~ 90 or more. I like very high sens.
use 100 (im using 100) it cowl but need time to practice
something under 50-100
85+
I use 93. It Rulez x)
im i the only one using low sensitivity? im using 12 as of now