Broadway Mirrors are a nice little touch from Japan. They are larger than your OEM mirror giving you a much larger view of what is going on behind you. They come in both 270mm and 300mm in your choice of a flat or convex face. The convex face will give you even more of a view of what is around you.
The Broadway Air uses a new mount type that is wider allowing installation on to more styles of mirrors. Going with a larger mirror may interfere with your sun visors.