I find no problem using the 12x scope. It gives me the distance I need for big levels and I find it easier to press up on the D pad once than 3 times because it makes it for a faster snipe and exit of the scope and makes for better dodging.
It may not be the fastest scope, but the only thing that matters is that it gets the job done
+ I like using it cause it singles me out from the crowd that uses high scopes. I love that warm gooey feeling inside when I'm singleout
(Mr. Rogers accent or Forest Gump, depending on preferance) It makes me feel special.