As a high school teacher, I get very amused about pencil preference among my students. They get very set in their ways!
I'm a sharpened-pencil girl. Sharpened in a very good electric sharpener, please, to a well defined point, but not sharp enough to snag the paper or risk breaking.
And there are two kinds of lead - I have no idea how to describe them, but I know which kind I like and which kind I hate. The one I hate requires more pressure on the pencil.
And then there are preferences on notebook paper...