Sanford Clickster Grip
The grip is damn comfortable plus the side clicker allows for convenient clicking. I hate the bic's with the clicker on the top. Plus, when the eraser is gone, the Pentel eraser refills from Officemax can be persuaded to fit (about a 30 second operation) giving it long life. After awhile though, the grip starts to feel grody (sp?), probably from absorbing the oils from my skin.