Appearance is pretty subjective but IMHO the Yamaha windshield looks as good as any of the full size ones. I'm a tall guy, 6' 5" and wanted a little extra height to deflect the wind over my helmet and found this plexiglass extension called a Laminar Lip which works very well, and doesn't look too bad.
Don't know how well it comes out in my profile pic but if you want some bigger ones send me your e mail address.
Course if you're talking about a small instrument cowl this probably isn't of any interest to you.