I got in about 45 miles with my new CB 14" dark tint on the 09 SERG yesterday under varying conditions -- surface streets, Interstate, etc. I am 5' 10". I have no lowers.
I like this windshield a lot! It's beats the heck out of my KW 8". There is very little, if any, wind buffeting at speeds below 65 mph. Above 65 I get a little bit of buffeting on the top and sides of the helmet, but much less than the KW. At 85-90, it's only a little worse, but still much, much, much better than the KW. The only vibration I got was when the engine would vibrate a bit more under acceleration or deceleration. Otherwise, I didn't see a single shimmy out of the shield.
Bottom line: The CB 14" dark tint get a huge thumbs up from me.
This will be my windshield of choice. The CV shields are too "plain jane" looking for my tastes. Even if they are better at reducing the wind and/or buffeting at speed, I like the CB. It seems a reasonable tradeoff between an agressive looking windshield (sporty, though not as agressive as the KW, for instance) and wind protection (pretty good, but perhaps not as good as the CV or a stock non-CVO RG windshield).
The CB stays on my SERG.