I use 6~8, on Treyarch games I can't use high sensitivities I don't know why but the way I play I don't need a high sensitivity, just be aware of your surroundings so people won't be behind you.
The following user thanked Grumpfy for this useful post:
I use 6~8, on Treyarch games I can't use high sensitivities I don't know why but the way I play I don't need a high sensitivity, just be aware of your surroundings so people won't be behind you.
I usually put it down to 9-11 when I'm not using a sniper, only because I need to be aware.
It depends on the play style I am going with. If I am rushing I will use a 8 or if I'm sniping I'll use 10. If I somehow decide to camp I will play on a 6 or 7.