Re:Pentel R.S.V.P. (Score 1)

I only use RSVPs. A built-in rubber finger grip makes them easy to hold and write with, the ballpoint never gets jammed, ink flow is nice and regular, and the fine-tip variety last a loooong time. I write an average of 2 full sides of 8.5x11" paper daily (programming notes, development notes, meeting notes, etc.), and I routinely have my RSVPs last at least 6 months. I started engraving the date I start using a new pen just to see how long they last. The medium-tips get used up rather quickly (1-2 months) because they use more ink when writing.