The biggest (and cheapest) major improvement to a windshield (as you already have one) is to stop the airflow underneath the headlight, which rises up over the gas tank, and causes turbulence. I use a standard Memphis Shades Alley Cat, with a 1/4 inch clear plexiglass plate across and underneath the headlight, secured by MS Lowers mounts. This plate rises up and in front of the windshield, so it passes all air up and over the windshield. I have been using it for years. Absolutely no buffeting. A real "cone of silence" with no wind at all" for the rider. Also, since it is clear plexiglass, it almost appears invisible on the bike.
