I like Lexon's Scribalu pen. It's got their signature modern and sleek design with a nod to the old fashioned feather and inkwell. It's a simple, sleek rollerball pen in a hefty base. You simply take it out and put it back as needed. Nice design, nice idea.

This used to be only available in aluminum but is now available in red, black, and white. I hear they will soon have it available in other colors as well.