Over the years I've become a big fan of Faber-Castell fountain pens. Their nibs are consistently smooth, smooth, smooth. The Faber-Castell E-motion
Pen Review: Faber-Castell E-Motion — The Gentleman Stationer
The caps front piece and end button are made of chrome-plating and polished metal, giving this pen a futuristic look.
Faber-Castell Design E-Motion Pear Wood Brown Rollerball Pen
Guilloche' Rollerball Pen by Graf von Faber-Castell (various colours)
Faber-Castell E-Motion Pear Wood Fountain Pen Review - The Pen Company Blog
Faber-Castell E-motion rollerball: the King of Pens - Scrively - note taking & writing
Faber-Castell Design E-Motion Rollerball Pen - Pure Silver - Pen Boutique Ltd
Faber Castell e-Motion Stained Pear Wood Fountain Pen Review Artist Line Work Using Fountain Pens — The Art Gear Guide
Guilloche' Rollerball Pen by Graf von Faber-Castell (various colours)
Pen Review: Faber-Castell E-Motion — The Gentleman Stationer
Faber Castell e-Motion Stained Pear Wood Fountain Pen Review Artist Line Work Using Fountain Pens — The Art Gear Guide