I conducted a test this evening. With the help of our fellow BanditAlleyBBS friends, I got the instructions for swaping windscreens. I want to say I appreciate everyones helpfulness. I was able to take off the current Givi, put on the Zero Gravity, take off the Zero Gravity, put on the Gustafsson, take off the Gustafsson, and put the Givi back on all within 90 minutes. I took the bike for a ride in between each swap to check the wind effects. Turns out the best of all is the Givi. I am a pro now at switching windshileds.
I found the Zero Gravity to produce significant wind noise and a little more turbulance then I prefer. The Gustafsson is way longer and was weird to look at. It was better than the Zero Gravity, but not as good as the Givi was. Therefore, I am sticking with the Givi.
I am however going to try the Laminar Lip. I will check out both the touring model and the standard model. I have tried so many things, might as go for them all.
I also have Genmar barback risers and really feel they help.