I have the BaggerShield (11-19") and love it. The 11" virtually eliminated the distortion of the radio at higher speeds. I use earplugs when riding and the music is good for me around 20-25 volume at 70-80mph.
The top screen in either position does not rub, vibrate or move at all. The extra 2" on each side seems to have really cut down on the buffeting. I like the looks of the smoked screen and no problem to see over/though it.