Which Helico design should I pick?

Here at MetMo we aren't biased, and we love both the herringbone and spur designs. 

The humble herringbone is designed to interlock unlike any other gear. They engage and roll easily in the palm of your hand without the need of any fixed axis, so you appreciate the mesmerising motion of the gears meshing together, unlike anything else you can hold in your hand. Interlocking with ultimate precision, the herringbone profile offers a classic look. 

The satisfying spur is named after the gear pattern we know and love, with a deep groove for those users who want an even greater tactile experience. The overlapping points on spur provide an intense feeling through your fingers, giving you a full-on fidget feel factor.