Some of you guys must have short torsos. I'm 5'10" with 32" inseam. I have the Russell seat which adds about an inch to the height. I have the CB +6.
At the bottom position the shield comes up to my shouders. I do not get any buffeting, but, a lot of noise.
At second position it is just at chin. Noise is less.
At third position (middle) it come up to the nose. This is the best position for me for all around town and highway stuff.
At fourth position it is just above eye level, until I get up to speed. The screen flexes enough that I can just see over it at 70mph. This is the quietest setting. It also means that around town I am looking through the shield. This is my favorite setting for winter.
I don't use it in the fifth (highest) position.
I might be tempted to get the +4 if I ever break this one. Would let me use the complete range of settings instead of only the bottom 4.
FWIW, when the wind is really blowing I lower the screen. That reduces the "sail" effect and actually reduces buffeting of the body. Noisy, but, then again, when the wind is gusting 30-40mph from a front quarter, the windshield isn't really protecting much anyway