The BEST pen on the planet: the BIC 4-color ballpoint, no question.
It's been around forever, kind of low tech, it's this big fat shape, it writes medium and not all that smooth, BUT with a simple click you can have black, blue, red or green ink on demand.
One pen to keep up with, one pen to dig around and find in the bottom of your backpack. How perfect is that?
Take a look.
