Pencil, Conte or charcoal: What is your medium of choice?

My medium of choice is pencil after using both conte and charcoal, its frustrating and impossible to erase mistakes. As time goes by I might change my mind but I am no Ingres at this moment and cannot manipulate conte that well. Charcoal pencils need sharpening every minute and its also frustrating to start and stop a drawing I lose my focus and can't stay on track with all the interruptions. So pencil so far has been my choice I can be comfortable make mistakes and not be scared that it won't come off. I wish charcoal and conte were like that because I would enjoy both mediums more than I do now.