>>5912514>>5912515well they do not break as easily, also you can sharpen the .7 with sandpaper to make a really sharp point even close to .3 i glue some sandpaper at the inside of my sketchbook so i can sharpen it anytime even better if you have those led holders but they make too much mess and graphite powder when you sandpaper them but the .7 hardly any mess and yes its my personal preference there is no much difference other than size
