Thanks Jayd, Dr.Greg and Scooter.
My main concerns are 1. reducing wind noise (yes, I wear earplugs) and 2. protection from weather.
The lowest position on the stocker is the least noisy position for me. The top position results in some serious "whump-whump", low-bass wind noise.
I have seen the Calsci windshields and was wondering if anyone had experiences with them. Scooter: when you mention 'ducati site' which web site are you referring to? Multistrada.net?
Dr.Greg - if you dont mind me askin' - whats your height? From your description it does sound like the higher windshield is the way to go. Nice bike by the way. I have one of its identical twins

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Michael