Anyone who has ever used a wooden pencil will know that over time as you use the pencil it becomes smaller and smaller. You then have to decide what to do with this small stubby pencil?
For many years I have been a fan of standard No. 2 (or HB in the UK) pencil as they always felt comfortable to hold and when you need a few moments of contemplation, spend some time with a sharpener. I have love of quality pencils like Faber-Castell and Rhodia but I am equally at home with the office version from Staples.