Madstad by Dade City,Fl.I can ride with a ball cap and shades on highway.It's adjustable up-down and tilts.I rode there they put it on for me to try before buying it.I went home with it and went back for a bigger screen as they didnt have one made the way I wanted it.Great guys and great service.Best of all the shield Rocks.
If your shorter than 6 foot I have a Clearview that I took off.It wasn't tall enough for me,wind hit me in eyes and pushed bill on ball cap down.
They say a Givi air flow is good .Havent tried one but dought its better than a Madstad .
What are you looking for in a screen?