The best type of leather for watch bands depends on your preferences and needs, but **full-grain leather** is widely considered the highest quality. Here's why:

1. **Durability**: Full-grain leather is tough and long-lasting, often outliving other types of leather if properly cared for.
2. **Natural Look**: It retains the natural texture and markings of the hide, giving it a rich, authentic appearance.
3. **Aging Gracefully**: Over time, full-grain leather develops a unique patina, enhancing its character and charm.

If you’re looking for a smoother finish at a lower price point, **top-grain leather** is a good alternative. For luxury and unique styles, exotic leathers like crocodile, ostrich, or lizard are excellent but more expensive options.