I personally use 1100 dpi 0.34 sens but my friend uses 1200 dpi with 1.2 sens. They say im crazy for playing with such a low sens. What do you guys use?

So I was thinking, why can't you select multiple skins for a gun so it changes automatically each game or maybe each round. Because now there are so many cool skins but you only see one. Except if you change it each game, but I personally f...