Do you?
My favourite is the Sakura Writoll 0.5.
Basics: It’s very light. The silicone grip is … grippy. It’s very comfortable to use.
Killer: The pencil top button retracts the pencil lead in to a sheilded tip, protecting the lead.
Improve: It's a shame the pencil is plastic, an aluminium version would be great.
Anyhow. I thnk It’s a very good pencil. You can buy one through JetPens or Amazon.