My screen experience so far, 5,11 (1.80cm), with a schuberth C3pro
From worst to best..
Original screen with Iconic Spacers
Puig sport screen
Puig sport screen with Iconic Spacers
MRA Vario touring screen
The MRA is shorter than the original (will measure to be sure) and the variable spoiler allows you to tune the airflow for (rider)height, wind conditions or speed. It's still not perfect in my opinion...but it's the best so far...and i think i'm going to stop searching from this point on.
hope this is useful for others.