Another vote for the Fisher Bullet. I keep it in a pouch that I carry every day along with a Rite in the Rain pad. Worked great when my wife ran into an old friend at a rainy concert and they wanted to exchange contact info!

I also like the Dr. Grip pens, because I find they are comfortable to write with. I prefer the gel ink. The refills for those are interchangeable with the Pilot G2 pens as well, so I can buy one set of refills for two different pens.

The Bullet is a great pen...I'm really not happy that I lost the burgundy colored one my wife got me...defective pants pockets, and if fell out the hole! Anyhow, I do not recommend answering essay exams with the Bullet...I've done it a few times, and I almost got carpal tunnel from it!

Google "titanium pen" and you'll find some pens that are all ti, and take Parker refills...and cost between $500-$700! <img src="/images/graemlins/ooo.gif" alt="" />