Apple Watch Bands
The Apple Watch Sport bands are great for working out and they are dressy enough for many users, but if you want to go high-end the Apple Watch is where you'll see most of the leather and metal bands.
The good news is that you can use these bands on the Apple Watch Sport and Apple sells them separately in the Apple Store. You can also buy adapters to connect a regular watch band to the Apple Watch Sport and Apple outlined details for third-party watch bands.
You can use these bands on both the Apple Watch and the Apple Watch Sport, but there is no need to buy the Apple Watch just for access to better bands.