D-Train,
I also came from an M109...had it fitted with a Corbin fairing, and a taller aftermarket Long Ride windshield. No matter how I monkeyed with it, I could not get rid of the buffeting at speed.
When I picked up my F6B, it already had the Madstad installed, but that was what I was looking for. The Madstad has been impressive...quiet, no buffeting, and keeps the rain off at speed. In the Pacific Northwest, thats desirable. The loudest thing on my highway ride home was the noise from the 18 wheeler' tires on the road going the opposite way.
In town, I can drop the Madstad manually during a red light stop. Can't recommend it enough.
Good luck with your decision!
C