On the back of what you have said I have just ordered the 7 Jurock screen. So hopefully after 4 screens this should sort the one and only issue I have with the bike. Namely the buffeting. it does look taller and wider.
I'll be really interested in how this screen performs, like you I think I've tried every screen, spacer, adaptor, aerofoil add-on available and cannot find a solution to the buffeting. Apart from the really short screens, which give zero weather protection